Section B question 1

Answer:

x = 24

Step-by-step explanation:

T = 24.93 + 0.21x      Substitute 30.18 for T

30.18 = 24.94 + 0.21x

-24.94  - 24.94              Subtract 24.94 from both sides

5.24 = 0.21x                   Divide both sides by 0.21

x = 24.95 ≈ 24 because you can't have a partial text message.

If this answer is correct, please make me Brainliest!

Two Equivalent Fractions of 5/8 = 10/16 and 15/24

Answer:

The total period should be 14 months and not 141414 months.

Thus answer will be: number of months spent in Brazil is 5 months and he spent 9 months in Portugal.

Step-by-step explanation:

Let the number of months he lived in Portugal be X and the number of months he lived in Brazil be Y: Thus we have:

X  +  Y  = 14 months.

He learned an average of 130 new words per month when he lived in Portugal: 130 x number of months (X) = 130X

and an average of 150 new words per month when he lived in Brazil: 150 x number of months in Brazil (Y) = 150Y.

Thus we have 130X + 150Y  = 1920

Since X  +  Y = 14: make X subject of formula: X = 14 - Y. then substitute this for X in the equation below

130X + 150Y  = 1920

130(14-Y) + 150Y = 1920

1820 - 130Y + 150Y = 1920

150Y - 130Y = 1920 - 1820

 20Y = 100

    Y = 100/ 20 = 5 months

Thus number of months spent in Brazil is 5 months. To find the number of months spent in portugal, use the first equation:

    X  +  Y = 14 where Y is 5

   X = 14 - 5 = 9 months. Thus he spent 9 months in Portugal

Answer: 90 visitors per hour

Explanation: "Per hour" means in 1 hour, so we can rewrite the given statement using fractions as 450 visitors/5 hours = __visitors/1 hour.

To find out what goes in the bank, notice that we

have a 1 in the denominator of our second fraction.

So we want to find a fraction that is equivalent

to 450/5 that has a 1 in the denominator.

If we divide the numerator and denominator of 450/5 by 5,

we get the equivalent fraction 90/1 or 90 visitors/1 hour.

So now we have 90 visitors/1 hour = __visitors/1 hour.

So a 90 must go in the blank.

This means that the museum sees 90 visitors per hour.

Answer:

tan53=x/14

Step-by-step explanation:

solve after that with inverse tan and simple algebra

Answer:

There are therefore 60% women there so altogether there are 70 people at the meeting

Answer:

Its 3

Step-by-step explanation:

36-(3(3)+4)

36-(9+4)

36-13

23

2(3+7)+3

2(10)+3

20+3

23

They are equal

Answer:

C

Step-by-step explanation:

2 x pi x r = circumfrence

2 x 7 x pi = 43.96

Answer: 43.96 m

Step-by-step explanation: To find the circumference of the circle shown here, start with the formula for the circumference of a circle which is shown below.

Circumference = 2πr

Notice that the radius of the circle is 7 meters.

So we can plug in 7 meters for r in the formula.

So we have (2)(π)(7m) which is equal to 14π m.

So the circumference of the circle shown here is 14π m.

Remember that π is approximately equal to 22/7 or 3.14 so we can estimate the value of the circumference by plugging in 3.14 for π.

So we have (14)(3.14) which is equal to 43.96.

So the circumference of the circle is

approximately equal to 43.96 m.

Answer:

144 pages read

Step-by-step explanation:

80% = 0.8

0.8 * 180 = 144

Answer:

Equivalent equation: [tex]x^{2} +17x +60=0[/tex]

Solution: x = {-12, -5}

Step-by-step explanation:

[tex]-7x-60=x^{2} +10x\\x^{2} +10x+7x +60=0\\x^{2} +17x +60=0\\x^{2} +12x+5x +60=0\\x(x+12)+5(x+12)=0\\(x+12)(x+5)=0\\x+12=0\: or \: x+5=0\\x=-12\: or \: x=-5\\x=-12,\:-5\\[/tex]

Answer:

volume

Step-by-step explanation:

Answer:

1/4 = 25%

Step-by-step explanation:

The probability of heads is 1/2.

The probability of an even number on a die is 3/6 = 1/2.

The probability of both is (1/2) (1/2) = 1/4, or 25%.

Answer:

make me brainlist pls pls pls pls

Step-by-step explanation:

A "fair" coin lands heads-up half of the time and "tails-up" half of the time.

For one flip, the probability of landing heads-up is 1/2.

Of those successes, we now consider the probability of the "fair" die landing with an even number on top. This probability is (number of successes) / (total number of possibilities) = 3/6, or 1/2.

So, the probability of both events happening ("and") is 1/2 of 1/2, or (1/2)*(1/2) = 1/4.

Answer:60%

Step-by-step explanation:

If there are 1000 students in total and 600 are majoring in engineering, you divide 600 by 1000 to find the percent of students majoring in engineering. (600/1000) =.6

To turn a decimal into a percent you move the decimal over 2 places making it 60%.

Answer: 600/1000 = .6 that is the answer

or 60% when you turn the decimal to percent

Step-by-step explanation:

Answer:

Perimeter: [tex]p = 4\cdot l[/tex], Total costs: [tex]C = 24\cdot l[/tex]

Step-by-step explanation:

The garden has a square form. Let be [tex]l[/tex] the length of any of the sides, measured in yards. The perimeter of the garden, measured in yards, is:

[tex]p = 4\cdot l[/tex]

Now, perimeter has a length unit and total costs of edging the garden, measured in US dollar, is:

[tex]C = \left(6\,\frac{USD}{yard} \right)\cdot 4\cdot l[/tex]

[tex]C = 24\cdot l[/tex]

Answer:

3.75

Step-by-step explanation:

The hundredth is the 2 number after the decimal point so round that up.

Answer:

3.75

Step-by-step explanation:

the hundreths place is the second number to the left of the decimle, because the number to the left of the hundreths place is less than five. You leave the hundreths place number as it is. This leaves you with your awnser: 3.75

Answer: 45 handshakes.

Step-by-step explanation:

We have 10 kids.

Let's count.

Kid 1, can meet other 9 kids, so here we have 9 handshakes.

Kid 2, he can meet other 9 kids, but he already handshaked kid 1, so here we only count 8 handshakes.

Kid 3, he can meet other 9 kids, but we already counted the handshake with kid 1 and kid 2, so from here we only count 7 handshakes.

You can see the pattern, the total number of handshakes will be:

H = 9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1  = 45

Answer:

45 handshakes

Step-by-step explanation:

Answer:

Correct option: Third one -> 8.2 units

Step-by-step explanation:

Assuming that the function that models the amount of radioactive material remaining after x hours is:

f(x)=10*(0.98)^x

To find the amount of material after 10 hours, we just need to use x = 10 in the equation and find the value of f(x):

f(10) = 10*(0.98)^10

f(10) = 8.1707

Rounding to nearest tenth, we have f(10) = 8.2

Correct option: Third one

Answer:

correct answer is C 8.2 units

Step-by-step explanation:

hope this helps!

Answer: 1. multiplication

Step-by-step explanation:

Suppose that you want to change an object with length L with a scale factor a, then the lenght of the rescaled object will be:

L' = a*L

Then the correct option is 1) multiplication.

Notice that sometimes you may find that the scale factor is a number like 1/5 and when you find the new lenght you will end with something like:

L' = L/5 that seems like a division, but this is actually the multiplication between L and 1/5.

Answer: 9

Step-by-step explanation:

Answer:

11) D. 144 b/m

12) B. As exercise levels increase, heart rate increases

13) D. Transporting wastes away from cells

14) B. Capillaries

15) This is because during excercise you increase the skin blood flow in order to enable ¨heat dissipation¨. Then after the increase in blood flow to the muscles decides to have an increase which causes it to have a cardiac output which is in direct proportion to the increase in oxygen consumption.

Step-by-step explanation:

Answer:

x = - 3, x = - 2

Step-by-step explanation:

Given

x² + 5x + 6 = 0

Consider the factors of the constant term (+ 6) which sum to give the coefficient of the x- term (+ 5)

The factors are + 3 and + 2, since

3 × 2 = + 6 and 3 + 2 = + 5, thus

(x + 3)(x + 2) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 3 = 0 ⇒ x = - 3

x + 2 = 0 ⇒ x = - 2

Answer:

x= -2 or -3

Step-by-step explanation:

First, you find the two factors that can replace +5 to enable you to factorize. To do this, you find the factors of +6 and check the factors that when added would give +5.

The factors are +2 and +3

x²+ 5x+6=0

x²+2x+3x+6=0

x(x+2)+3(x+2)=0

(x+2)(x+3)=0

x+2=0                 or                 x+3=0

x= -2                   or                 x= -3

∴x= -2 or -3

Hope this helps!!!

Answer:

1. yes

2. no

3. yes

Step-by-step explanation:

A monomial is one term.

1. Yes. 7b is one term.

2. No. 5x-11 is not one term. It is 2 terms.

3. Yes. 2020 is one term.

Answer:

a) [tex]x(x+3)[/tex]

b) [tex]2x(x-8)[/tex]

c) [tex]3x(2+3x^{2})[/tex]

d) [tex]4x^{2} (3x-1)[/tex]

Step-by-step explanation:

a) [tex]x^{2} +3x=x(x+3)[/tex]

b) [tex]2x^{2} -8x=2x(x-8)[/tex]

c) [tex]6x+9x^{3} =3x(2+3x^{2})[/tex]

d) [tex]12x^{3} -4x^{2} =4x^{2} (3x-1)[/tex]

Factors of the following algebraic expression are

a. Factors of x² + 3x   are x and x+3

b. Factors of 2x² -8x  are 2, x and ( x-4)

c. Factors of 6x +9x³ are 3, x  and (2 + 3x²)

d. Factors of 12x³ - 4x² are 4, x, x and (3x -41)

The factor of an given algebraic expressions are one or more numbers or linear or other expressions that multiply to form the given algebraic expression and cannot be broken down further into simpler expressions.

For finding factors of an algebraic expression we can simply take out common expressions from all the terms of the expression and try to simplify it.

a. x² + 3x = x( x+3), (taking x common from both terms)

b. 2x² -8x = 2x ( x-4) (taking 2x common from both terms)

c.  6x +9x³ = 3x (2 + 3x²)   ( taking 3x common from both terms)

d.12x³ - 4x² = 4x× x × (3x -41) ( taking 4x²  common from both terms)

Also, Learn more about the factors of the algebraic expression from the link below:

brainly.com/question/1245504

#SPJ1

Answer:

512

Step-by-step explanation:

Answer: 104.65%

Step-by-step explanation: 45/43=1.0465 so you just move the decimal to the right 2 places to make it a percent. It’s over 100% because 45 is higher than the total of 43.

Answer:

39 points.

Step-by-step explanation:

Correct questions: 22*2=44

Blank questions: 7*0=0

Incorrect questions: -1*5=-5

Add all the points up and you get:

44+0-5=

44-5=

39 points

Answer:

Slope of function A is less than function B.

Step-by-step explanation:

Function  A is y = 2x - 4  which has a slope of 2  ( the coefficient of x).

From the graph we see that the slope of Function B is  6/2 = 3 ( from the point (2,6)

Answer:

n - 24 = 46

Step-by-step explanation:

Answer:

It is 70 because when you add 24 and 46 it is 70

so when you subtract 24 from 70, you get 46

:)

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

if y=5-x then ...

a would be y=5-1 = 4

b would be y=5-2 =3

c would be y=5-4 =1

d would be y=5-3 =2

a is the right answer because (1,4) 1= x and y= 4 and 5-1=4

Answer:

If it says working for 23hrs then the answer is €204

Step-by-step explanation:

8×23=204