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lapo4ka [179]
1 year ago
13

which values are solutions to inequality below?check all that apply.

C%20%20%5Ctextless%20%5C%20%2010" id="TexFormula1" title=" \sqrt{x} \ \textless \ 10" alt=" \sqrt{x} \ \textless \ 10" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
mezya [45]1 year ago
3 0

Squaring both sides of the inequality gives

(\sqrt[]{x})^2x

Since x cannot be less than 0 (there is not square root for negative numbers), the above becomes

0\le x

Now, from the choices given, the numbers that lie in this interval are 93 and 99; thereofre, the correct choices are

C. 93

F. 99.

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1 year ago
What is the relationship between 21 and 22?
blsea [12.9K]

someone please help her or him please

4 0
3 years ago
Two trains started moving at the same time, train A from Boston to New York, and train B from New York to Boston. The distance b
Ede4ka [16]

Answer:

  • <u>After 1.7 hours</u>

Explanation:

<u>1. Calculate the average speed of train B</u>

  • 60mph = 3/4 (s) ⇒ s = 60 (4/3) mph = 80 mph

<u>2. Build a table</u>

When the two trains meet:

Train     Average speed     Distance       time (distance/average speed)

                 mph                            

A                 60                             x                        x/60

B                 80                        240 - x                (240 - x) / 80

<u>3. Write the equation</u>

The time, when the two trains meet, is the same for both trains:

                  \dfrac{x}{60}=\dfrac{240-x}{80}\\ \\ \\ 80x=14,400-60x\\ \\ 80x+60x=14,400\\ \\ 140x=14,400\\ \\ x=14,400/140\\ \\ x=102.85miles

<u>4. Calculate the time:</u>

  • x/60 = 102.86 / 60 = 1.7 hours

The two trains will meet after 1.7 hours

7 0
2 years ago
In a survey of market, it is found that 143 persons use white toothpaste and 135 use red toothpaste. If 70 of them use both the
denpristay [2]

Answer:

let W and R represent white toothpaste and red toothpaste represently

n(W)=143

n(R)=135

n(WnR)=70

n( WuR)=?

Now,

n(WuR)=n(W)+n(R)_n(WnR)

=143+135_70

=208

that's all don't forget to write therefore.

6 0
3 years ago
How do you factor 2x^2+x-3
xxMikexx [17]
Find the factors of -3:
1,-3 and 3,-1

which ever adds up to 1 multiplied by 2

the answer is (2x+3)(x-1)

hope this helps
7 0
3 years ago
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