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DiKsa [7]
3 years ago
14

What is x^2-64=0

}^{2} 64 = 0" alt="x { - }^{2} 64 = 0" align="absmiddle" class="latex-formula">
Mathematics
2 answers:
kumpel [21]3 years ago
7 0

Answer: This does seem quite hard, but i'll try to help the best I can.

So, i'd assume the ^ is multiplication. So from that you have 2x.

And then if i'm correct, you can't do 2x-64 because of the letter in the equation. So this question kinda doesn't make sense. Also, i kinda gave up halfway through it good luck dude/dudette :|

Step-by-step explanation:

BlackZzzverrR [31]3 years ago
3 0
X = 8, this is because 8 * 8 = 64 - 64 = 0
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One number is 5 more than 4 times another. their sum is 70. find the two numbers.
djyliett [7]
Numbers are 2 and 13
3 0
3 years ago
Drag each expression to the correct location on the model. Not all will be used
grandymaker [24]

Answer:     \dfrac{x^{2}+2x+1 }{\mathbf {x-1}} \cdot \dfrac{\mathbf {5x^{2} +15x-20} }{7x^{2} +7x}

Step-by-step explanation:

\dfrac{\dfrac{5x^{2} +25x+20}{7x} }{\dfrac{x^{2} +2x+1}{7x^{2} +7x} } =\dfrac{5x^{2} +25x+20}{7x} \times \dfrac{7x^{2} +7x}{x^{2} +2x+1}=\dfrac{5x^{2} +25x+20}{7x} \times \dfrac{7x(x +1)}{(x+1)^{2} }=\\\\=\dfrac{5x^{2} +25x+20}{x+1} =\dfrac{{5(x+1)(x+4)}}{x+1}=5(x+4)

5(x+4)=\dfrac{5(x-1) \cdot (x+4)}{x-1}=\dfrac{5x^{2} +15x-20}{x-1}

<em>Thus, the expressions will be used: (5x² + 15x - 20) and (x + 4).</em>

<em>Let's check:</em>

\dfrac{x^{2}+2x+1 }{\mathbf {x-1}} \cdot \dfrac{\mathbf {5x^{2} +15x-20} }{7x^{2} +7x} =\dfrac{(x+1)^{2} }{x-1}  \cdot \dfrac{5(x-1) \cdot (x+4)}{7x(x+1)} =\\\\=\dfrac{(x+1) \cdot 5 \cdot (x+4)}{7x} =\dfrac{5x^{2} +25x+20}{7x}

5 0
3 years ago
Write the equation of the line through the two points.(-1,4),(-4-5)
yulyashka [42]
The equation would be Y=3X+7. If you have any questions, please ask.
3 0
3 years ago
Subtract 7x+27x+2 from -5x^2-2x−5x 2 −2x.
kicyunya [14]

Simplified value of  subtraction of 7x+27x+2 from -5x^2-2x−5x 2 −2x. is -10x^{2} -38x-2.

Given Expressions  7x+27x+2 and  -5x^2-2x−5x 2 −2x.

Expressions refers to the combination of numbers, variables and symbols. It represents the relationship between variables. They are solved for finding out the value of variables. It is mainly not in equal to form. Subtraction is possible when subtracting the coefficients of same variable.

We have to subtract 7x+27x+2 from -5x^2-2x−5x 2 −2x. and to do this we need to first solve the expressions itself.

7x+27x+2=34x+2------------------1

-5x^{2} -2x-5x^{2} -2x=-10x^{2} -7x-2x--------------------2

Now subtract 1 from 2

=-10x^{2} -7x-2x-34x+2

=-10x^{2} -38x-2.

Hence the simplified value of subtraction is -10x^{2} -38x-2.

Learn more about expressions at brainly.com/question/723406

#SPJ10

4 0
2 years ago
Five out of seven teens said they do homework every night. What is a reasonable prediction for the number of teens out of 980 wh
alexdok [17]

Answer:

700 teens

Step-by-step explanation:

If five out of 7 teens do homework every night

There are 980 teens

How many out of 980 teens would do homework every night?

Firstly divide 980 teens by 7

Which is 980/7=140

Next is,

Out of 7 teens, there are 5 who do homework every night

So, multiply 140 by 5

140×5=700 teens

This means, the reasonable prediction of teens who do homework every night out of 980 is 700 teens

3 0
4 years ago
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