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3 years ago

How can you use a number line to model and compare positive and negative rational numbers

1 answer:

8 0

You can use a number line to compare negative and positive numbers because the negative numbers will be located after the 0 while the positive numbers will be located before the 0.

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A college's tuition has risen 5% each year since 2015. If the tuition in 2015 was $10,850, predict the cost of tuition for this

barxatty [35]

i'm sorry, I really don't know, but Brainy or wtvr this keeps notifying me to answer a question and it's annoying.

3 0

3 years ago

Plz help<br><br><br>If x:6 as 3:9, then x is equal to

sladkih [1.3K]

Answer:

x/6 = 3/9

9x = 18

x = 2

Answer: 2:6 as 3:9

If x:6 as 3:9, then x is equal to

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Equation:

(x/6) = 3/9

x = 6(3/9)

Step-by-step explanation:

4 0

3 years ago

James estimated the total cost of groceries to be $50. The actual cost of the groceries is $65. What is the percent error? Round

Yuki888 [10]

The percentage error is 23%

Explanation:

The estimated total cost of the groceries = $50

The actual cost of the groceries = $65

To find the error value, we need to subtract the value of actual cost and total cost of the groceries.

Thus,

error value = actual cost - total cost

error value $= 65-50=15$

Hence, error value = $15

The formula to determine the percent error is given by

$Percent error $=\left(\frac{\text { error value}}{\text {actual value}}\right) \times 100$$

Substituting the values in the formula, we get,

$\begin{aligned} \text { Percent error } &=\left(\frac{15}{65}\right) \times 100 \\ &=0.231 \times 100 \\ &=23.1 \end{aligned}$

Rounding off the value, we have, 23%

Thus, the percentage error is 23%

6 0

3 years ago

In the following isosceles trapezoid, find the value of x.

yulyashka [42]

Answer:

Step-by-step explanation:

22 - 8 = 14

14/2 = 7

Pythagoras theorem

25 squared -7 squared = 576

square root of 576 = 24

5 0

3 years ago

Three fifths of the children in a school are boys. 7/8 of the girls in the school are right-handed. What fraction of the childre

Kaylis [27]

Answer:

To find the answer we only need to know,

Total no.of girls and Total no.of right handed girls.

So,

Total no.of right handed girls = 7/8

Total no.of girls = 8/8 (as given in question)

Total no.of left handed girls is,

(Fraction of total no.of girls) - (Fraction of total no.of left handed girls)

= 8/8 - 7/8

= 1/8

∴ 1/8 of the girls in the school are left handed.

7 0

3 years ago