What is the value of x?
°x=32
°x=36
°x=37
°x=40

Answer:

Step-by-step explanation:

Solving quadratics is easy. With no coefficient to the x^2, we can go right to finding factors. We want two numbers that multiply to -21, and add to 4. Our numbers are 7, and -3. Now, we move the numbers around to be (x-3) and (x+7). We know that these both equal 0, so we can do basic algebra to solve for x. We can subtract 7 to the other side to just get x, and add 3 over because it is subtracted by x. This leaves us with our answers:

x = -7, x = 3

Answer:

13n - 39 = 39

Step-by-step explanation:

Let the number be n.  Then we have 13n - 39 = 39

Answer:

< theta international

Answer:

D. (-x+5)^2/9+(y-4)^2/4=1    (I assume there was a mistype)

Step-by-step explanation:

The first step is isolating the sine and cosine functions.

x=5-3cos(t)

x + 3cos(t) = 5

3cos(t) = 5 - x

cos(t) = (5 - x)/3

y=4+2sin(t)

y - 4 = 2sin(t)

(y - 4)/2 = sin(t)

Then, square at both sides of the equal sign

cos²(t) = (5 - x)²/3² = (5 - x)²/9

sin²(t) = (y - 4)²/2² = (y - 4)²/4

Recall the trigonometric identity and replace.

cos²(t) + sin²(t) = 1

(5 - x)²/9 + (y - 4)²/4 = 1

Answer:

n = 4

Step-by-step explanation:

[tex]3n-2=10\\3n=10+2\\3n=12\\n=12/3\\n=4[/tex]

I hope I helped you! Please mark me brainiest if I am correct. Thanks!

Answer:

n=4

Step-by-step explanation:

Answer:

C or [tex]y=\frac{1}{4}^{x}[/tex]

Step-by-step explanation:

when x is 0 y is 1 and every positive number to the zeroth power is 1

so It can be A or C

but the value of y goes down when x goes up so its exponential decay or less than 1 so 1/4<1 So

C or [tex]y=\frac{1}{4}^{x}[/tex]

Explanation:

If you have repeated x values, then you wont have a function. For example, the points (1,5) and (1,6) mean we don't have a function since the input x = 1 leads to multiple outputs y = 5 and y = 6 simultaneously. For a function to be possible, we must have any input lead to exactly one output only.

What we do is set the x coordinates (k^2 and 3k) equal to each other and solve for k

k^2 = 3k

k^2-3k = 0

k(k-3) = 0 .... factoring

k = 0 or k-3 = 0 .... zero product property

k = 0 or k = 3

If k = 0, then (k^2,5) becomes (0,5). Also, (3k,6) becomes (0,6). The two points (0,5) and (0,6) mean the graph fails the vertical line test.

Similarly, if k = 3, then (k^2,5) becomes (9,5) and (3k,6) = (9,6). Another vertical line test failure happens here to show we don't have a function.

Answer:

U can’t convert a single number to a mixed number

Step-by-step explanation:

Answer: A (top left box)

Step-by-step explanation:

Step-by-step explanation:

CI = p ± z √(pq/n)

For 90% confidence, z = 1.645.

CI = 0.55 ± 1.645√(0.55 × 0.45 / 64)

The expression  to find the 90% confidence interval is

[tex]CI = 0.55 + 1.645 \sqrt{\frac{0.55 ( 0.45)}{64} }[/tex]

A confidence interval is a range of estimates for an unknown parameter. A confidence interval is computed at a designated confidence level; the 95% confidence level is most common, but other levels, such as 90% or 99%, are sometimes used.

CI             z

0.70        1.04

0.75 1.15

0.80 1.28

0.85 1.44

0.90        1.645

0.92 1.75

0.95 1.96

0.96 2.05

0.98 2.33

0.99 2.58

According to the question

Data of  people = 64

Data proportion (P) =  0.55

The 90% confidence interval

therefore, [tex]z_{c}[/tex] =  1.645

CI = P± [tex]z \sqrt{\frac{P ( 1-P}{N} }[/tex]

substituting the value

[tex]CI = 0.55 + 1.645 \sqrt{\frac{0.55 ( 0.45)}{64} }[/tex]

CI = 0.5563

Hence, expression  to find the 90% confidence interval is

[tex]CI = 0.55 + 1.645 \sqrt{\frac{0.55 ( 0.45)}{64} }[/tex]

To know more about confidence interval here:

https://brainly.com/question/24131141

#SPJ2

Answer:

B, C, E

Step-by-step explanation:

I took the test and I got it right

Answer: B C E

Step-by-step explanation: Edge 2020-WAiT! It’s not 2020 any MORE! Anyways edge 2021

Answer:

40%

Step-by-step explanation:

one strategie is doing proportions

96/240= ?/100

simplify 96/240= 2/5

so 2/5=?/100

multiply 100 by 2

then divide it by 5

another strategie is putting it into a decimal and percent

96/240= 2/5

in decimal is 0.40

move the decimal twice to the right and you get 40%

Answer: y = 2x + 2

Step-by-step explanation:

To find the slope of a line perpendicular to another line, you take the slope of the other line and flip it (find the negative reciprocal) and make it negative.

In this case, -1/2 would become 2. 2 is now the slope of the line perpendicular to the other line.

Since the line passes through (1, 4), we can plug the point in - the line will be

y = 2x + 2.

Answer:

y=2x+2.

Step-by-step explanation:

Honestly the perpendicular flipping didn't make sense, but somehow google thought so, so ill leave it at this, if you need more help, just message me.

Answer:

a=  3/4

Step-by-step explanation:

2/3 x 3/4- 1/6 = 1/3

Answer:

1 1/5 cups of butter

Step-by-step explanation:

4/5=2

      =3

 4/5 x 3=12/5

12/5 / 2

12/5 x 1/2=1 1/5

Answer:

425+24x=y

Step-by-step explanation:

Answer: y=425x + 24

Step-by-step explanation: :PP

Answer: Not sure what you are asking; please edit your question so that I have the ability to assist you.

Step-by-step explanation: If the teacher did not  include much information, go ahead and email her and let her know. I am not sure what the work you are doing in class is but try to ask her if she could help and if you need anything else, let me know!

Stay safe. Stay warm.

<3

-Carrie

Answer: The first one is  144 .   The second one is   C.

Step-by-step explanation:

Answer:

1) Full surface area = 156unit^2 this is correct.

lateral surface area = 144unit^2, this wasn't asked.

2) C = 528unit^2 is correct.

Lateral = 480unit^2 this wasnt asked.

Step-by-step explanation:

yes the next one is C 528

The formula for finding the surface area is the same for all right prisms and is: Surface area = 2B + hP. In this formula, B is the area of one of the bases, while h is the prism's height, and P is the perimeter of the base.

In effect;

step 1 = parallel sides indicate the bases of all triangular prism

step 2 = perimeter = 3+4+5 = 12

step 3 = LA = P x H = P x Length which is lateral height

              LA = 12 x 12 = 144

step 4 = SA = 1/2 b x h (height of triangle) +LA

             SA = 1/2 4 x 3      + LA

             SA = 2 x 3 = 6 = 1 base + LA   (+base)

             SA = 6+6 = 12 + 144  = 156 = 2b+LA

IF you remember LA is perimeter x length of prism but label L as H then use little h for triangle h. You can remember.

Answer:

AC=8 and CD=15

Step-by-step explanation:

Answer:

8 AND 15 :)

Step-by-step explanation:

Answer:

20

Step-by-step explanation:

3x-y+z; x=2, y=-4, z=10

3x-y+z

3*2-(-4)+10

6+4+10

10+10

20

Step-by-step explanation:

Step 1:  Find the solution

[tex]3x - y + z[/tex]

[tex]3(2) - (-4) + (10)[/tex]

[tex]6 + 4 + 10[/tex]

[tex]20[/tex]

Answer:  [tex]20[/tex]

｡☆✼★ ━━━━━━━━━━━━━━  ☾  

First calculate the area of the field using this equation:

area = (a+b)/2 x h

Substitute the values in:

area = (210 + 190)/2 x 250

area = 50000 m^2

Calculate how many hectares this is:

50000/10000 = 5

This is 5 hectares

Multiply this by the number of kg per hectare

5 x 7200 = 36000

It would produce 36000 kg

Have A Nice Day ❤    

Stay Brainly! ヅ    

- Ally ✧    

｡☆✼★ ━━━━━━━━━━━━━━  ☾

Answer:

The answer is C- A, M, T, O

Answer:

125y

hope this helps

Answer:

Y = 125

Step-by-step explanation:

Answer:

315

Step-by-step explanation:

42÷2 = 21

2×21 = 42

So, 15×21 = 315

315÷21 = 15

Answer:

315

Step-by-step explanation:

42÷2 = 21

2×21 = 42

So, 15×21 = 315

315÷21 = 15

Answer:

√5 i

Step-by-step explanation:

√-5

√5*√-1

√-1=i

√5*i

√5 i

Answer:

b

Step-by-step explanation:

Answer:

D. 5:7 and 10:14

Step-by-step explanation:

25:35=5:7

5x2=10

7x2=14

Answer:

x=-4,y=5

Step-by-step explanation:

Answer:

B (-4,5)

Step-by-step explanation:

x-3y=-19

2x+y=-3

this is how I'll start it off, I'll multiple the bottom equation by 3 to have the y-value become the reciprocal (opposite) of the top equation.

now it's:

x-3y=-19

6x+3y=-9

now add/subtract

7x=-28

divide 7 from both sides

x=-4

now plug -4 into the equations to get y

-4-3y=-19

add 4 to both sides to get rid of -4

-3y=-15

divide -3 on both sides

y=5

now to double check, do the other equation

2(-4)+y=-3

-8+y=-3

add 8 to both sides to get rid of -8

y=5

now to check the answer, plug in x=-4 and y=5 into the equations

-4-3(5)=-19

-4-15=-19

2(-4)+5=-3

-8+5=-3