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Lyrx [107]
3 years ago
9

Can someone help me my grade are bad

Mathematics
2 answers:
Likurg_2 [28]3 years ago
8 0

Answer:

8.31

Step-by-step explanation:

Using the Pythagorean Theorem:

a^2+b^2=c^2

10^2+b^2=13^2

100+b^2=169

b^2=69

b = \sqrt{69}

b = 8.306623863

The side length for x, rounded to the nearest hundredths, would be 8.31.

professor190 [17]3 years ago
3 0

Answer:

<em>x</em><em>=</em><em>√</em><em>1</em><em>3</em><em>^</em><em>2</em><em>-</em><em>1</em><em>0</em><em>^</em><em>2</em>

<em>x</em><em>=</em><em>√</em><em>1</em><em>6</em><em>9</em><em>-</em><em>1</em><em>0</em><em>0</em>

<em>x</em><em>=</em><em>√</em><em>6</em><em>9</em>

<em>x</em><em>=</em><em>8</em><em>.</em><em>3</em><em>0</em><em>6</em>

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A newspaper and three hot chocolates cost $7. Two newspapers and two hot chocolates cost $6. How much does one hot chocolate cos
pochemuha

Answer:

the cost of one hot chocolate is $2.

Step-by-step explanation:

Let x be the hot chocolate cost and y be the newspaper cost.

Given:

A newspaper and three hot chocolates cost $7

So, the equation is

3x+y=7--------(1)

Two newspapers and two hot chocolates cost $6

So, the second equation is.

2x+2y=6---------(2)

Find one hot chocolate cost?

Solve equation 1 for y.

3x+y=7

y=7-3x

Put y value in equation 2

2x+2(7-3x)=6

2x+14-6x=6

14-4x=6

-4x=6-14

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negative sign is cancelled both side.

x=\frac{8}{4}

x=2

Therefore, the cost of one hot chocolate is $2.

3 0
3 years ago
The expression, involving exponents , to represent the shaded area, in square inches, diagram. Then use that expression to calcu
mart [117]

Answer:

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Step-by-step explanation:

we know that

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so

A=6^{2} -(3^{2} +2^{2})\\ \\ A=(2*3)^{2} -(3^{2} +2^{2})\\ \\A=(2^{2})(3^{2}) -(3^{2} +2^{2})

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Remember that

3^{2}=9\\ 2^{2}=4

substitute

A=(4)(9) -(9 +4)\\ \\A=36-13\\ \\A=23\ in^{2}

5 0
3 years ago
PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!! I CANNOT RETAKE THIS!!
alex41 [277]

the correct answer should be (b) 6 is extraneous.

If you look at the second row of the solution you see (x-6) as a factor in one of the denominators. That's a problem: if 6 were a solution this denominator would become 0. But denominators being 0 is bad (undefined), so while 6 comes out of the algebraic manipulation as a solution, it is invalid, or extraneous.

-3 is a fine solution.

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3 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
Find each unit price. Which is the better by? Explain please.
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1.49/3

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This is a fraction equal to 1.49/3.

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