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nika2105 [10]
3 years ago
8

I don't get how to do these wondering if someone can help

Mathematics
2 answers:
asambeis [7]3 years ago
7 0
Do u have a caculater

netineya [11]3 years ago
6 0
Let's do #8.  You need to find 40% of 68 grapes.  To do this, convert 40% to hthe corresponding decimal fraction (0.40) and multiply 68 grapes by it.

0.40(68 grapes) = ?

Please try doing the remaining problems.  If they're unclear, ask clarifying questions, please.
You might be interested in
Sac had a rope that was 15 feet long. He cut it into three pieces. The first piece was 3.57 feet longer than the second piece. T
harina [27]

Answer:

5.79 feet

Step-by-step explanation:

Let us represent

First piece = x

Second piece = y

Third piece = z

Sac had a rope that was 15 feet long.

x + y + z = 15

He cut it into three pieces.

The first piece was 3.57 feet longer than the second piece.

x = 3.57 + y

The third piece was 2.97 feet longer than the second piece.

z = 2.97 + y

How long was the third piece of rope?

x + y + z = 15

3.57 + y + y + 2.97 + y = 15

3y + 6.54 = 15

3y = 15 - 6.54

3y = 8.46

y = 8.46/3

y = 2.82 feet

Therefore, the length of the third piece z = 2.97 + y

z = 2.82 + 2.97

z = 5.79 feet

7 0
3 years ago
In the search to determine if car 1 is slower to accelerate than car 2, the mean time it takes to accelerate to 30 miles per hou
kupik [55]

Answer:

Step-by-step explanation:

The happiest used in a test in statistics are the null and the alternative hypothesis. The null hypothesis is usually the default statement while the alternative hypothesis is thevopposite of the null hypothesis.

In this case study, the null hypothesis is u1 = u2: the average mean time it takes to accelerate to 30 miles per hour for car 1 is the same as that for car 2.

The alternative hypothesis is u1 > u2: the mean time it takes to accelerate to 30 miles per hour is greater than that for car 2 thus car 1 is slower to accelerate as it takes more time.

7 0
3 years ago
A sandwich shop loses $1.20 every time somebody buys a sandwich, but makes $1.80 every time somebody buys a drink. One day, the
levacccp [35]

Answer:

A, B, and C

I think. Please let me know if wrong.

Heres what i did:

1.8 x 100 = 180.

180 - 80 = 100

(they made over 100 in profit)

A. 1.2 x 0 = 0

B. 1.2 x 40 - 48

C. 1.2 x 60 = 72

D. 1.2 x 70 = 84

E. 1.2 x 80 =96

D and E bot Exceed 80 so it has to be AB and C

Hope this Helps ☺

6 0
4 years ago
Mark walked 1,000 meters per day every day for one week how many kilometers did he walk all together?​
elena-s [515]

Answer:7

Step-by-step explanation:

1,000 meters is equal to 1 kilometer so it would be 7 pretty sure

3 0
4 years ago
Read 2 more answers
An secondary school have 250 students 30% in the First grade secondary and 35% Second grade secondary.
MaRussiya [10]

Answer:

Third grade secondary = 87 students

Step-by-step explanation:

First grade = 30/100 x 250 = 75 students

Second grade = 35/100 x 250 = 87.5 rounded off to 88 students. Because students can't be half thus can't be in decimal. So round off to the nearest whole number.

Third grade = 250 - 88 - 75 = 87 students

4 0
4 years ago
Read 2 more answers
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