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2 years ago

Solve using elimination. –9x − 7y = –10 9x + 8y = 5

Mathematics

1 answer:

guapka [62]2 years ago

7 0

Answer:

x=4y

Step-by-step explanation:

mathpapa

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natulia [17]

Answer:

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3 years ago

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Which of the following is equal to (3^-3)(3^7)? 3 ^-10 3 ^10 3 ^4 3 ^-4

bixtya [17]

Answer:

3⁴

Step-by-step explanation:

Hey there! To evaluate $\displaystyle \large{3^{-3} \cdot 3^7}$ , we can simply do by using one of exponent laws.

<u>Laws of Exponent</u>

<u /> $\displaystyle \large{a^m \cdot a^n = a^{m+n}}$

Hence, let m = -3 and n = 7. Therefore, $\displaystyle \large{3^{-3} \cdot 3^7 = 3^{-3+7} \to 3^4}$

Let me know if you have any questions regarding the exponent!

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2 years ago

What is 37% of 150$

lakkis [162]

Answer:

$55.50

Step-by-step explanation:

150 (0.37) = 55.5

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3 years ago

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What is 18:14 equal to

skad [1K]

It equals 9:7
If its the answer u want

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3 years ago

What is the area of a parallelogram ABCD

svetoff [14.1K]

Answer:

Area of a parallelogram would be 13.46

Step-by-step explanation:

Since area of a parallelogram is represented by the formula

Area = $\frac{1}{2}$ ( $(D_{1}*D_{2})$

Where $D_{1}$ and $D_{2}$ are two diagonals of the given parallelograms.

In the given figure $D_{1}=AC$ and $D_{2}$ = BD

We will find the length of $D_{1}$ and $D_{2}$ first

Since points A and C are (3,6) and (5,1)

So distance AC = $\sqrt{(6-1)^{2}+(3-5)^{2} }$

= $\sqrt{5^{2}+(-2)^{2}}$

= $\sqrt{25+4}=\sqrt{29}$

Since B and D are the points (6, 5) and (2, 2)

So length of BD = $\sqrt{(6-2)^{2}+(5-2)^{2}}$

BD = $\sqrt{4^{2}+3^{2}}=\sqrt{25}=5$

Now we will put these values in the formula

Area of parallelogram = $\frac{1}{2}(\sqrt{29})(5)$

= $\frac{5}{2}$ × $\sqrt{29}$

= (2.5) (5.385)

= 13.46

5 0

3 years ago