Which of the following is NOT a way to
solve systems of equations?
A) Substitution
B) Elimination
C) Factoring
D) Graphing

Answer:

Step-by-step explanation:

Chelsea is making a kite in the shape of a triangle. To determine if the triangle is a right triangle, Chelsea completed the following steps.

Step 1:

Find the side lengths of the triangle: 30 inches, 24 inches, 18 inches.

Step 2:

Substitute the values into the Pythagorean theorem: 18 squared + 24 squared = 30 squared.

Step 3:

Combine like terms: (18 + 24) squared = 30 squared.

Step 4:

Evaluate each side: 1764 not-equals 900.

Chelsea says the triangle is not a right triangle. Which best describes the accuracy of her explanation?

The triangle is actually a right triangle. In step 2, Chelsea incorrectly substituted the values into the Pythagorean theorem.

The triangle is not a right triangle, but in step 2 Chelsea incorrectly substituted the values into the Pythagorean theorem.

The triangle is actually a right triangle. In step 3, Chelsea incorrectly rewrote the expression on the left side of the equation.

The triangle is not a right triangle, but in step 3, Chelsea incorrectly rewrote the expression on the left side of the equation.

Answer:

X=30

Step-by-step explanation:

First do the inverse which is 9 add 21 which is 30

Then u do 30-9 which equals 21 to clarify the answer

Answer:

[tex]x=30[/tex]

Answer:

c 25 cubic unit

Step-by-step explanation:

2 1/2=5/2

v=length *width *height

(5/2)*4*(5/2)=25

It would be 25 cubic squares

quiz verified

Answer:

You can see that the chance of having at least one boy is 1/2 in the first generation, 3/4 in the second, and 7/8 in the third.

Step-by-step explanation:

Answer:

Area = 156.25 pi square centimetres

Step-by-step explanation:

circumference = 》

[tex]2 \: \pi\:r[/tex]

so,

=》

[tex]2 \: \pi \: r = 25\pi[/tex]

=》

[tex]r = 25 \div 2[/tex]

=》

[tex]r = 12.5[/tex]

now, the area = 》

[tex]\pi \: r \: {}^{2} [/tex]

=》

[tex]\ pi \times 12.5 \times 12.5[/tex]

=》

Answer:

It would be 8

Step-by-step explanation:

20% of 40 is 8

Answer:

8

Step-by-step explanation:

this is correct, i think, sorry if it's not.

ty :9

Answer:

I mean I think they are all quadrilateral, but the one that is congruent and perpendicular on both sides is a square.

Step-by-step explanation:

Answer:

J

Step-by-step explanation:

Answer: F

Step-by-step explanation: Because I Did The Test! :)

Answer:

B (1/6)

Step-by-step explanation:

The cards she draws doesn't affect what number the dice lands on.  1 every 6 times on average the dice lands on 6 so there is a 1/6 probability represented by B.

Answer:

15 cm squared

area =l x w

so 3 x 5= 15

Step-by-step explanation:

Answer:

15cm

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

-8x + 25 = -15

                 -25 = -40  then

-40 divide -8 to get 5

Answer: x = 5

The first step of the inverse operation is to subtract 25 on both sides of the equation to cancel out the 25 from the left side:

-8x+25 (-25) = -15 (-25)

-8x = -40

Next, you need to divide -8 on both sides to isolate the variable, which would give you the answer to x. The negatives would cancel out, leaving you with: x = 5

hope that helps :)

Answer:

(5b^9)/a^3

Step-by-step explanation:

Answer:

-56[tex]x^{11}[/tex]

Please mark brainliest if you can, thank you

Step-by-step explanation:

Answer:

−56x^11        (The 11 is an exponent)

I hope I helped

Answer:

$2.22

Step-by-step explanation:

Answer:

Step-by-step explanation:

Supplementary angles add up to 180°.

“θ is 148° more than its supplement”

Supplement of θ = 180°-θ

θ = (180°-θ) + 148°

2θ = 328°

θ = 164°

Supplement of θ = 180°-164° = 16°

Answer:

The answer is A)-4,6

Step-by-step explanation:

sorry if wrong

hope this helps

plz give brainliest

Answer:

use the matway well help you get the answers

Answer:

First option: 6y^2sqrt(10) + 12sqrt(5y)

Step-by-step explanation:

3sqrt(10) * (2y^2 + 2sqrt(2y)

= 6y^2sqrt(10) + 6sqrt(20y)

= 6y^2sqrt(10) + 12sqrt(5y)

Answer:

y=-4x+5

Step-by-step explanation:

Answer:

she will toss pennies

Step-by-step explanation:

please mark as brainliest

Answer:

4.5 I think

Step-by-step explanation:

Answer: 72 degrees each angle

Step-by-step explanation:

A pentagon has 5 sides and all interior angles = 360 degrees

360 degrees divide by 5 = 72 degrees

a) 360 degrees

b) 1 interior angle = 72 degrees

Answer:

4

Step-by-step explanation:

It is. I just know it lol

Answer:

Figure 3

Step-by-step explanation:

Answer: He bought 46.875 pounds of rice for the week.

Step-by-step explanation:

Total rice he bought = (Number of dishes made in a week) x (portion of rice in each dish)

GIven: Each portion has 5 ounces of rice.

i.e. each portion has [tex]\dfrac{5}{16}[/tex] pounds of rice.    [ 1 pound = 16 ounces]

Total rice he bought ( in pounds)=[tex]150\times\dfrac{5}{16}[/tex]

[tex]=46.875\text{ pounds}[/tex]

Hence, he bought 46.875 pounds of rice for the week.

Answer:

Step-by-step explanation:

f(0) = ab^0 = 5

a = 5

f(1) = 5b^1 = 8

b = 8/5

f(x) = 5(8/5)^x

Answer:

63

Step-by-step explanation:

first yoy need to put the biggest number on the top then multiply each number

[tex]8x + 1 > - 31 \\ 8x > - 1 - 31 \\ 8x > - 32 \\ x > \frac{ - 32}{8} \\ x > - 4[/tex]

Answer:

6

Step-by-step explanation:

Using the similarity theorem f the triangle

(4+6)/x+9 = 4/x

10/x+9 = 4/x

Cross multiply

10x =4(x+9)

10x = 4x+36

10x-4x = 36

6x = 36

x = 6

Hence the value of x is 6