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2 years ago

PLZZZ HELP ME 10 PTSS

Mathematics

2 answers:

Anestetic [448]2 years ago

5 0

Answer:

5 31/ 30 or 6 1/30

Step-by-step explanation:

I wish this helped you

Vilka [71]2 years ago

5 0

Answer:

D. 29

Step-by-step explanation:

First, let's make things a bit easier for ourselves and convert mixed numbers to improper fractions

$-\frac{10}{3}* -\frac{87}{10}$

Next, we check for numbers that can cancel out. In this case, we have 10.

$-\frac{1}{3}*-\frac{87}{1}$

Because negatives cancel out, we get

$\frac{87}{3}$

when we multiply.

Fractions just mean division, so we divide 87 by 3 and get

D. 29

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Which of the following is a solution to the equation − 2/5 x = 10? a. x = -4 b. x = -25 c. x = 4 d. x = 25 plz help im stuck

Mama L [17]

The answer is b, x=-25.

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3 years ago

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What is 40,0123 times 100,0345 ?????

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Step-by-step explanation:

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3 years ago

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Bill has some counter in a bag.

andrew11 [14]

9514 1404 393

Answer:

Step-by-step explanation:

The 10 non-yellow counters in the bag represent 5/7 of the total number of counters, c.

10 = (5/7)c

10(7/5) = c = 14

There are 14 counters in the bag, of which 14-10 = 4 are yellow.

_____

<em>Alternate solution</em>

Let y represent the number of yellow counters in the bag. The probability of drawing a yellow counter is the number of yellow counters divided by the total number of counters:

y/(y +3 +7) = 2/7

Multiply both sides of this equation by 7(y+10) to get ...

7y = 2(y +10)

7y = 2y +20 . . . . eliminate parentheses

5y = 20 . . . . . . . . subtract 2y

y = 20/5 = 4 . . . . divide by the coefficient of y

There are 4 yellow counters in the bag before any are taken.

<em>Another alternate solution</em>

If the probability of yellow is 2/7, the ratio of yellow (y) to non-yellow is ...

yellow : non-yellow = 2 : (7-2) = 2 : 5 = y : (3+7) = y : 10 = 4 : 10

⇒ y = 4

There are 4 yellow counters in the bag.

8 0

3 years ago

Robert painted 4/8 of each tile with green paint. He painted 52 tiles. What is the total amount of tiles that he painted green?

valkas [14]

Answer:

The answer is 26

Step-by-step explanation:

All we do is multiply 4/8 by 52.

52 = 52/1

52/1 * 4/8 = 208/8

208/8 = 26

So the answer is 26.

Hope this helps! :)

3 0

2 years ago

Water boils at 100LaTeX: ^\circ∘ Celsius or 212LaTeX: ^\circ∘ Fahrenheit. Water freezes at 0LaTeX: ^\circ∘ Celsius or 32LaTeX: ^

Lubov Fominskaja [6]

Answer:

$F = 1.8C +32$

$F = 86^{\circ}F$

Step-by-step explanation:

Represent Celsius with C and Fahrenheit with F.

So, we have:

$(C_1,F_1) = (100,212)$

$(C_2,F_2) = (0,32)$

Solving (a): Represent as a linear equation

First, we calculate the slope:

$m = \frac{F_2 - F_1}{C_2 - C_1}$

This gives:

$m = \frac{32 - 212}{0 - 100}$

$m = \frac{-180}{- 100}$

$m = 1.8$

The linear equation is then calculated using:

$F - F_1 = m(C -C_1)$

Where

$(C_1,F_1) = (100,212)$

$m = 1.8$

$F - 212 = 1.8(C -100)$

$F - 212 = 1.8C -180$

Make F the subject

$F = 1.8C -180+212$

$F = 1.8C +32$

Solving (b): The value of F when C = 30

Substitute 30 for C in $F = 1.8C +32$

$F = 1.8 * 30 + 32$

$F = 54 + 32$

$F = 86$

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3 years ago

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