All categories

3 years ago

I will mark brainliest! The question is the image attached, please help!

Mathematics

2 answers:

torisob [31]3 years ago

8 0

Answer:

x=20 and y=128.Option 2

Step-by-step explanation:

Since,the angles are vertically opposite,they are equal(property)

Therefore,

(3x-8)=(2x+12)

3x-8=2x+12

3x-2x=12+8

x=20,

Now,

Since,the angles are formed in a straight line,their sum is equal to 180(property)

Therefore,

y+(2x+12)=180

y+2×20=180-12

y=168-40

y=128

Therefore,x=20 and y=128

mamaluj [8]3 years ago

6 0

option 2 would be your answer because it explains the missing part where y is.

You might be interested in

Rewrite the expression c + 0.25c using fractions instead of decimal numbers.

gogolik [260]

Answer:

$\huge\boxed{\frac{5c}{4},\ or\ c+\frac{1}{4}c,\ or\ c+\frac{c}{4}}$

Step-by-step explanation:

The decimal 0.25 can simply be converted into a fraction by putting it over 100.

0.25 = $\frac{25}{100}$

Then, simply divide both the numerator and denominator by 25 to get

$\frac{25/25}{100/25}$ , or $\frac{1}{4}$

Hope it helps :)

8 0

3 years ago

Go step by step to reduce the radical.

zysi [14]

2x16 is 32 so you would take square root of 16 out which is 4 and leave the 2 inside. So the answer is 4sqrt(2)

4 0

2 years ago

If h(x) = 5 – 7x^2. what is h(-1)?

ankoles [38]

Step-by-step explanation:

h(x)=5-7x²

h(-1)=5-7×(-1)²

5-7
-2

hope it helps.

<h2>stay safe healthy and happy..</h2>

7 0

3 years ago

Read 2 more answers

Eli claims that the product of and is . Which explains whether Eli is correct?

Shalnov [3]

Answer: last option.

Step-by-step explanation:

According to the Product of powers property, you have:

$a^n*a^m=a^{(n+m)}$

As you can see, when you can add the exponents when you have powers with equal base.

Then, $6^5$ and $5^{-3}$ do not have the same base, therefore, the exponents can't be added.

Therefore, Eli is incorrect, because he added the exponents even though the bases are not the same.

6 0

4 years ago

I need help on number 16 these instructions say to solve these equations by cross multiplying

Grace [21]

Answer:

15. x = 4

16. a = 19

Step-by-step explanation:

"Cross multiply" essentially means "multiply both sides of the equation by the product of the denominators."

$\dfrac{x}{6}=\dfrac{2}{3}\\\\3(x)=6(2)\qquad\text{"cross multiply"}\\\\\boxed{x=4}\qquad\text{divide by 3}$

This is an example of a problem in which cross-multiplying introduces the need for an extra step: divide by 3. Had we simply multiplied by the denominator of the x-term, we would have been finished in one step:

x = 6(2/3) = 4

That is, rather than multiplying by the <em>product of the denominators</em>, sometimes the problem can be solved more easily if you multiply by their <em>least common multiple</em>.

$\dfrac{a+1}{a+5}=\dfrac{a-4}{a-1}\\\\(a-1)(a+1)=(a+5)(a-4)\qquad\text{"cross multiply"}\\\\a^2-1=a^2+a-20\qquad\text{simplify}\\\\\boxed{19=a}\qquad\text{add $20-a^2$}$

8 0

3 years ago