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3 years ago

Can you explain how to solve this please?

Mathematics

1 answer:

givi [52]3 years ago

6 0

9514 1404 393

Answer:

-25

Step-by-step explanation:

Consult your memory of multiplication tables to determine the square root of 100.

10×10 = 100

√100 = 10

Then multiply that value by -2.5

-2.5×10 = -25

___

Of course, you can use a calculator or spreadsheet to evaluate this expression, too.

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Miranda has 180 beads for making helpers. She buys 240 more beads. She wants to store the beads in a case with 6 sections. how m

yuradex [85]

Answer:

70 is the answer.

Step-by-step explanation:

180+240= 420

420 divided by 6 is 70

4 0

3 years ago

2x + 5.2 What does x equal

elixir [45]

Answer:

x = 2.6

Step-by-step explanation:

2x + 5.2 = 0

2x = -5.2

x = -5.2 / 2

x = -2.6

6 0

3 years ago

Solve y = x2 +7 for x.

FromTheMoon [43]

$\huge\boxed{x=\sqrt{y-7}}$

We are trying to isolate $x$ . Subtract $7$ from both sides. $y-7=x^2$

Find the square root of both sides. $\boxed{\sqrt{y-7}}=x$

<em>Note: I've attached a graph of $y=x^2 +7$ .</em>

3 0

4 years ago

Can you add 4√10 and 4√6 together? If so, what is the answer?

Mnenie [13.5K]

Answer:

No, because the radicands are not the same

Step-by-step explanation:

7 0

3 years ago

In one grade of 150 students, the ratio of boys to girls is 2 : 3.

Radda [10]

Answer:

60 boys are in the grade.

Step-by-step explanation: Since there are 150 students, we can divide that number by the combined ratio, which in this case is 5. Dividing 150 by 5 would yield 30 students. We can use this information to multiply the given number of boys in the ratio by 30, which would produce 60.

3 0

3 years ago