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maria [59]
3 years ago
9

Look at the picture and pls help

Mathematics
1 answer:
g100num [7]3 years ago
6 0
$160 bc the 80 will get the 50% discount and then $120 plus$40 equals $160. Hope this helps
You might be interested in
Jennifer 4 years older than her sister, Rebecca. Their ages sum to 28. How old are each of the sisters?
Musya8 [376]

Answer:

Rebecca is 12

Jennifer is 16

Step-by-step explanation:

28 - 4 = 24

24 : 2 = 12

12 + 4 = 16 (Jennifer)

28 - 16 = 12 (Rebecca)

8 0
2 years ago
a caterpillar stated at point(-2.5 -5.5) on a coordinate plane.She crawled in a straight line through the origin to point (45,y)
iren [92.7K]

Answer:

99

Step-by-step explanation:

Since the caterpillar crawled through the origin, her movement can be described by a straight line equation modeled with the points (-2.5; -5.5) and (0; 0).

The slope of a linear equation is given by:

m=\frac{y-y_0}{x-x_0}\\m=\frac{-5.5-0}{-2.5-0}\\m=2.2

For x = 45, the value of y is:

y= 2.2x\\y= 2.2*45\\y=99

The value of the y-axis is 99.

3 0
2 years ago
The price of a car is £2750.
Katyanochek1 [597]

Answer: $2200

Step-by-step explanation:
20% = 0.2
2750 x 0.2 = 550
2750 - 550 = 2200

OR


2750 x (1-0.2) =
2750 x (0.8) = 2200

4 0
2 years ago
Read 2 more answers
What is 4 2/7 ⋅ 2 1/5 ?
Vikki [24]

Answer: 9 and 3/7

Step-by-step explanation: To multiply a mixed number by a mixed number, we first want to write each mixed number as an improper fraction.

We can write a mixed number as an improper fraction by multiplying the denominator by the whole number and adding the numerator.

We can change 4\frac{2}{7} to the improper fraction 30/7.

We can also change 2\frac{1}{5} to the improper fraction 11/5.

Now, we are simply multiplying fractions. To multiply fractions, we multiply across the numerators and multiply across the denominators. When we multiply these fractions, we will end up with the fraction 330/35. Since 330/35 is not in lowest terms, we need to divide both the numerator and denominator by the greatest common factor of 330 and 35 which is 5 and we will get the improper fraction 66/7.

Notice however that 66/7 can be changed into a mixed number by dividing the denominator which is 7 into the numerator which is 66.

66 divided by 7 equals 9 with a remainder of 3 so we can write 66/7 as the mixed number 9 and 3/7.

Therefore, 4 and 2/7 × 2 and 1/5 = 9 and 3/7

3 0
3 years ago
Read 2 more answers
Doris is investigating if height has any effect on red blood cell count. What is the explanatory variable?
sammy [17]

Answer:

a) The number of people that are being studied.

Step-by-step explanation:

1) The (missing) options are:

a) The number of people that are being studied.

b) red blood cell count

c) height

d) none of the above

2) Explanatory variables are synonymical terms for independent variables.

In short when those variables are really not affected by other ones they are also called Explanatory Variables.

It is useful to make a distinction between response variable, and explanatory ones. The first one is affected somehow and it is the response Doris wants to find out.

3) Certainly, the sample or population of this research is absolutely free of prior influence over the final results.  Since theoretically, the same research can be done over different samples and find other responses.

Then it's "a"

5 0
3 years ago
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