(i'll be giving brainliest on this one!! :) )

Solve seven times four and five eighths.

A) twenty eight and three eighths
B) twenty eight and five eighths
C) thirty two and three eighths
D) thirty two and five eighths


(Here is an image if needed :D) :

Answer:

148⁰

Step-by-step explanation:

M< EDF = M< DFE (because the two angles are equal because the triangle has two equal sides)

2x + 8 = 3x + 4

8 – 4 = 3x - 2x

4=x or x=4

So M< EDF= 2x4+8 = 16⁰  

So M< EDF + M< DFE= 32⁰

180⁰- 32⁰ = 148⁰

Answer:

2 ,but exact is 2.64172

Step-by-step explanation:

Answer:

2.64 gallons

Step-by-step explanation:

10/3.785= 2.64

Answer:

y=mx+b sdi c xc xx cx cx cxc xc 87

Step-by-step explanation:

Complete question is;

How do the expressions 72 divided by 9 and -72 divided by (-9) compare when they are evaluated?

A. They have different values and are different signs.

B. They have different values but are the same sign.

C. They have the same value but are different signs.

D. They have the same value and the same sign

Answer:

D. They have the same value and the same sign

Step-by-step explanation:

For 72 divided by 9,it is;

72/9 = 8

Usually when we don't have any sign in front of a number, it is said to be positive.

Thus, the answer can be expressed as; +8

Also, when -72 is divided by (-9), it is;

-72/-9

The negative signs will cancel out to give; 8

Similar to the first division, since no sign is attached to 8,it is said to be positive as +8.

This means both divisions yield same values and same signs

Answer:

C

Step-by-step explanation:

If its C I'm sorry That seems correct but I don't know for sure, just my advice!

Answer:

62.3

Step-by-step explanation:

6

8.9

*7

____

 62.  3

I tried to show how to do it but carry the 6 at the top

Answer:

64 (I rounded btw)

Step-by-step explanation:

8.9 × 7 = ??

1. Round 8.9

2. 8.9 can be rounded to 9

3. change equation

4. 9×7= 63

Thus, your answer is 63

(If your supposed to do the math differently tell me and I'll correct it)

Answer:

This is a relationship, and NOT a function

Step-by-step explanation:

Notice that from the pairs listed, we find that the number 14 in the Domain is connected via the relationship with TWO different numerical values in the Range (with 19 and with 5).Therefore, this cannot be a function, since in such case, each element of the Domain must connect with no more than one element of the Range.

Answer:

f(c) = 5(c)^5+2(c)^3-5(c)^2-3

c = 1

F(1) = -1

Step-by-step explanation

1 → 5  0  2  -5  0  -3

     ↓  5  5   7  2   2

     5  0+5  2+5  -5+7  0+2  -3+2

     5   5       7    2     2    -1

f(1) = 5(1)^5+2(1)^3-5(1)^2-3

f(1) = -1  

Answer:

∠Z and ∠W are supplementary

Step-by-step explanation:

In the diagram given showing a special trapezoid, WX and ZY are two opposite sides that are parallel to each other.

Thus, consecutive angles would be supplementary.

Therefore, the only correct option that is true is:

∠Z and ∠W are supplementary.

The test options are incorrect as consecutive angles are not complementary and they are not in themselves congruent to each other.

They ARE supplementary so it WOULD be B <z and <w are supplementary

Answer:

no

Step-by-step explanation:

27 divided by 5 = 5.4 so there would not be enouph

Answer:

Each table will have 5 chairs, with 2 chairs leftover.

Step-by-step explanation:

27 divided by 5 equals 5 with a remainder of 2.

Answer:

The probability is  [tex]P(\= X > 12 ) = 0.72688[/tex]

Step-by-step explanation:

From the question we are told that

   The  mean is  [tex]\mu = 12.3 \ years[/tex]

    The standard deviation is  [tex]\sigma = 0.7 \ years[/tex]

    The sample size is  n = 14

Generally the standard error of the mean is mathematically represented as

         [tex]\sigma _{x} = \frac{\sigma}{\sqrt{n} }[/tex]

=>       [tex]\sigma _{x} = \frac{0.7}{\sqrt{14} }[/tex]

=>       [tex]\sigma _{x} = 0.1871[/tex]

Generally the probability that their mean life will be longer than 12 years is mathematically represented as

      [tex]P(\= X > 12 ) = P(\frac{\= X - \mu }{\sigma} > \frac{12 - 12.3}{ 0.1871 } )[/tex]

[tex]\frac{\= X -\mu}{\sigma }  =  Z (The  \ standardized \  value\  of  \ \=  X )[/tex]

       [tex]P(\= X > 12 ) = P(Z > -0.6034 )[/tex]

From the z table  the area under the normal curve to the left corresponding to    -0.6034  is

=>    [tex]P(Z > -0.6034 ) = 0.72688[/tex]

=>   [tex]P(\= X > 12 ) = 0.72688[/tex]

Answer:

A(w) = 692 - 12w - (8000/w)

Step-by-step explanation:

Since it has a total area of 500 cm², it means that;

A = hw

Where;

A is area

h is height

w is width

Thus;

500 = hw

h = 500/w

We are told that There is a margin around the edges of 4 cm at the top and 8 cm on the bottom and sides where nothing is printed.

Thus;

We have height as; (h - 4 - 8) and width as; (w - 8 - 8)

Thus;

Area = (h - 4 - 8) × (w - 8 - 8)

Area = (h - 12) × (w - 16)

We know that h = 500/w

And we want to find the printed area in terms of the width(w)

Thus;

A(w) = ((500/w) - 12) × (w - 16)

A(w) = 500 - 12w - 8000/w + 192

A(w) = 692 - 12w - (8000/w)

Using the area formula, the appropriate expression for the area of the poster is A(w) = - 8000/w - 12w + 692

Total Area = 500 cm²

Area = Length × width

Entire area can be expressed thus :

Area with print can be expressed thus :

Length with print = (l - 8 - 4) = (l - 12) cm

Height with print = (w - 2(8)) = (w - 16) cm

Area = (l - 12)(w - 16)

Area = (500/w - 12)(w - 16)

Expressing in terms of width :

A(w) = 500 - 8000/w - 12w + 192

A(w) = - 8000/w - 12w + 692

Hence, the required expression is : A(w) = - 8000/w - 12w + 692

Answer:

[tex]r=160-12m[/tex]

Step-by-step explanation:

Heart rate will be represented by [tex]r[/tex], minutes will be represented by [tex]m[/tex].

Here's the equation I came up with:

[tex]r=160-12m[/tex]

We can also rearrange it to look like a point-slope equation. Either way works, it's the same equation.

[tex]r=-12m+160[/tex]

This works because her heart rate is decreasing by a constant value. The initial heart rate is like the y-intercept, while the amount that it decreases by is the slope.

I hope this helps!

The equation is y=160-12t where t is the time in minutes.

The solution of a linear equation is defined as the points, in which the lines represent the intersection of two linear equations. In other words, the solution set of the system of linear equations is the set of all possible values to the variables that satisfies the given linear equation.

Given here, After sprinting, Emilie has a heart rate of 160. As

she cools down, her heart rate falls by 12 beats therefore, we can form the equation as if the time  is t minutes of cooling down then we can the heartbeat at a given time as y=160-12t

Hence, the equation is y=160-12t where t is the time in minutes.

Learn more about linear equation here:

https://brainly.com/question/545403

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Answer:

The third one

Step-by-step explanation:

Answer:

Y=3x

Step-by-step explanation:

I'm pretty sure it would be y=3x because you have to multiply the cost of the tickets by the number of tickets

Answer:

Eleanor was curious if triangles DEF and GHI were similar, so he tried to map one figure onto the other using rigid transformations Eleanor concluded "It's not possible to map triangle DEF on GHI using a sequence of rigid transformations, so the triangles are not similar. ... So the triangles are similar.

Step-by-step explanation:

Answer:

It is B. One more transformation — a dilation — would map \triangle DEF△DEFtriangle, D, E, F onto \triangle GHI△GHItriangle, G, H, I. So the triangles are similar.

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

In Quadrant I, both the x– and y-coordinates are positive; in Quadrant II, the x-coordinate is negative, but the y-coordinate is positive; in Quadrant III both are negative; and in Quadrant IV, x is positive but y is negative.

Answer: its actually A

Step-by-step explanation:

Its not b it is A The x-coordinate is negative, and the y-coordinate is negative

Answer:

A) Rectangle

Step-by-step explanation:

Hope this helps :D

Answer:

5

Step-by-step explanation:

Use formula or count the steps since it's on the same line

Answer:

8+5x=3x 8= -2x x = -4

Step-by-step explanation:

May I have brainliest please? :)

Answer:

-4

Step-by-step explanation:

5x + 8 = 3x

The graph will be linear with a positive slope if distance is increasing with time.

The question is incomplete but I will try to help you the much I can. The speed of a body is the ratio of distance covered to the time taken. The shape of the distance time graph depends on the nature of the relationship.

Even though the graph is not shown, the graph will be linear with a positive slope if distance is increasing with time.

Learn more about distance - time graph:https://brainly.com/question/1378025

Answer:

c

Step-by-step explanation:

Answer:

The correct answer is A

Step-by-step explanation:

Answer:

you will pay $75

Step-by-step explanation:

Answer:

Step-by-step explanation:

So First we know she pays (538.66) every month (12months in a year ) for (30) years

So 538.66*12*30 = 193,917.60

Then, we take his total payment minus the what he originally owed.

193,917.60 - 150,000 = $43,917.60

Susie's monthly mortgage payment on her $150,000 home is $538.66. If the loan has a 30-year term, the total interest she will have to pay throughout that time will be $43,917.60.

A mortgage is, to put it simply, a contract that a person forms after borrowing money from a lender (in this case, a bank) and giving the lender a guarantee (in the form of a real estate property) that the money will be paid back in full.

So first one must know  as she pays 538.66 every month as there are 12 months in a year and for 30 years, the payment calculation is:

538.66 × 12 × 30 = 193,917.60

Then, deduct the amount he originally owed from his total payment.

193,917.60 - 150,000 = $43,917.60

Therefore, the total interest she will have to pay throughout that time will be $43,917.60.

Learn more about mortgage from here:

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Answer:

27

Step-by-step explanation:

taking the second digit as 'x'

as per question the first digit is 'x-5'

therefore putting this in the one, tens, hundreds form

u multiply the first digit by 10 and the second by 1

therefore,

10(x-5) + 1(x)

now you have that the 2-digit number is equal to twice the sum of the digits,

so

10(x-5) + 1(x) = 3 [ (x-5) + (x) ]

on solving

10x - 50 + x = 3 (2x - 5)

11x -50 = 6x - 15

taking 6x on the right and -50 on the left

11x - 6x = 50 - 15

5x = 35

therefore x = 7

now substituting this value we get that the number is

27

Answer:

1. The curved surface area of the cone is 282.74 cm²

2. Radius of sphere r = 4.924 m

Step-by-step explanation:

1. Height of cone = 12 cm

Diameter of base of cone = 10 cm

Surface Area of cone = ?

The formula used is: [tex]A=\pi r(r+\sqrt{h^2+r^2})\\[/tex]

h= 12 cm

r = diameter/2 r = 10/2 = 5 cm

Putting values and finding surface area

[tex]A=\pi r(r+\sqrt{h^2+r^2})\\A=3.14*5 (5+\sqrt{(12)^2+(5)^2})\\A=15.7 (5+\sqrt{144+25})\\A=15.7 (5+\sqrt{169})\\A=15.7 (5+13)\\A=15.7(18)\\A=282.74 \ cm^2[/tex]

So, the curved surface area of the cone is 282.74 cm²

2. Sphere of Volume = 500 m³

We need to find radius of sphere

The formula used is: [tex]Volume=\frac{4}{3}\pi r^3[/tex]

Putting values and finding radius of sphere

[tex]Volume=\frac{4}{3}\pi r^3\\500=\frac{4}{3}*3.14* r^3\\500=4.186*r^3\\=> r^3=\frac{500}{4.186}\\r^3=119.446\\Taking \ cube \ root \ on \ both \ sides.\\\sqrt[3]{r^3}=\sqrt[3]{119.446}\\r= 4.924 \ m\\[/tex]

So, Radius of sphere r = 4.924 m

Answer:

1) The speed after 5 seconds is 13.[tex]\bar 8[/tex] m/s

2) The distance traveled after 5 seconds is 34.7[tex]\bar 2[/tex] meters

Step-by-step explanation:

1) The given parameters are;

The mass of the hockey puck, m = 0.18 kg

The horizontal force applied by the player, m = 0.5 N

The time at which the speed is calculated, t = 5 seconds after the force is applied

Therefore;

From the equation for the applied force, F = m × a. where a represents the acceleration, by substituting the known values get;

0.5 = 0.18 × a

∴ a = 0.5/0.18 = 50/18 = 25/9 = 2.[tex]\bar 7[/tex]

a = 2.[tex]\bar 7[/tex] m/s²

The speed after 5 seconds is given from the kinematic equation, v = u + a·t

Where;

v = The final velocity

u = The initial velocity = 0 m/s

t = The time = 5 seconds

By substitution of the known values, we get;

v = 0 + 2.[tex]\bar 7[/tex] × 5 = 13.[tex]\bar 8[/tex]

The speed after 5 seconds = 13.[tex]\bar 8[/tex] m/s

2) The distance traveled, s, after 5 seconds is given by the equation, s = u·t + 1/2·a·t²

From which we have;

s = 0 × 5 + 1/2 × 2.[tex]\bar 7[/tex] × 5² = 34.7[tex]\bar 2[/tex]

The distance traveled after 5 seconds = 34.7[tex]\bar 2[/tex] meters

Step-by-step explanation:

percentage discount = (360 - 270)/360 x 100% = 25%

Topic: Percentage

You can check out my insta (learntionary) for the formula for these types of questions or look for other cool math tips!

width of the rectangle = b = x

length of the rectangle = l = 8 + 2x

Perimeter of the rectangle = 70cm

Also, perimeter of the rectangle = 2(l + b)

70 = 2[x + (8 + 2x)]

70 = 2(x + 8 + 2x)

70 = 2(3x + 8)

70 = 6x + 16

70 - 16 = 6x

54 = 6x

54/6 = x

9 = x

Therefore, b = x

b = 9cm

l = 8 + 2x

I = 8 + 2×9

I = 8 + 18

I = 26cm