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kirill [66]
3 years ago
7

Write an equation for each problem. The square of a number is 8 more than twice the number.

Mathematics
1 answer:
avanturin [10]3 years ago
3 0

Answer:

The equation is equal to

x^{2}=2x+8

Step-by-step explanation:

Let

x -----> the number

we know that

The equation that represented the problem is equal to

x^{2}=2x+8

x^{2}-2x-8=0

Solve the quadratic equation by graphing

The solution are x=-2 and x=4

see the attached figure

therefore

The number can be -2 or 4

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steven can type 160 words in 2 minutes and 30 seconds at this rate, how many words can he type in 4 minutes?
Gnom [1K]

Answer:

hello : 256 words

Step-by-step explanation:

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3 years ago
Alex wrote the expanded form for the number 165.038 as "100 60 5 30 8." was he correct? if not, give the correct expanded form.
grin007 [14]

The expanded form for the number 165.038 is 100+60+5+0.03+0.008.

<h3>What is the expended form of decimal numbers?</h3>

Writing decimals in expanded form simply means writing each number according to its place value. This is done by multiplying each digit by its place value and adding them together. Let's look at an example: 2.435. In words, we would say this as two and four hundred thirty-five thousandths.

In the given question expended form 100+60+5+30+8 is wrong.

After decimal point the first digit is at the tenth place and second digit at the hundredth place and third is at the thousandth place and so on....

165.038  = 100+60+5+\frac{0}{10}+\frac{3}{100}+\frac{8}{1000}            

              = 100+60+5+0.03+0.008

Hence, The correct expended form of the given number is 100+60+5+0.03+0.008.

To learn more about expended form from the given link:

brainly.com/question/603715

#SPJ4

5 0
1 year ago
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