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snow_lady [41]
4 years ago
7

During a reading test, Teil reads a passage with with 640 words. It takes her 4 minutes to read the passage. At this rate, how l

ong will it take her to read a passage with 800 words?Required to answer.Single choice.
Mathematics
1 answer:
anastassius [24]4 years ago
4 0

Answer:

5 minutes

Step-by-step explanation:

Find the unit rate first. Unit rate in this case is how many words can she do in ONE minute. Key word ONE. 640 divided by 4 is 160. Then we do 800 divided by 160. And we get 5.

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Of the 800 sweaters at a certain store, 150 are red. How many of the red sweaters at the store are made of pure wool? (1) 320 of
vitfil [10]

Answer:

Statement (2) ALONE is sufficient, but statement (1) ALONE is not sufficient.

Step-by-step explanation:

Judging by the first sentence, there are 800 sweaters, 150 of which are red. Hence 800 - 150 = 650 sweaters are not red.

Statement (1) mentions that 320 of the sweaters at the store are neither red nor made of pure wool. This implies that of the remaining 650 non-red sweaters, 320 of them are not made of pure wool. It tells us then that there are 650 - 320 = 330 sweaters that are not red and that are not pure wool. So, it does not give information about red sweaters at all, whether pure wool or not.

Statement (2) says 100 of the red sweaters at the store are not made of pure wool. This means out of all 150 red sweaters, 100 of them are not made of pure wool. Then we have that 150 - 100 = 50 red sweaters are made of pure wool. This is the response to the question asked.

Hence, we see that statement (2) alone is enough, while statement (1) alone is not.

8 0
3 years ago
FIRST ANSWER GETS BRAINLIEST!!!
nlexa [21]

Answer: B

Step-by-step explanation:

169 = 144 + 25

Hyp^2 = opp^2 + adj^2

13^2 = 12^2 + 5^2

6 0
4 years ago
Read 2 more answers
Is y=-2/5x inverse or direct variation
liraira [26]

Answer:

direct

Step-by-step explanation:

The standard form of an equation representing direct variation is

y = kx ← k is the constant of variation

The standard form of an equation representing inverse variation is

y = \frac{k}{x} ← k is the constant of variation

y = - \frac{2}{5} x ← represents direct variation with k = - \frac{2}{5}

3 0
3 years ago
The perimeter of a parallelogram is 70 cm. If the ratio of the
Greeley [361]

Step-by-step explanation:

Perimeter of the parallelogram =2(l+b)

Length =3x and Breadth = 2x

So,

2(3x+2x)=70cm

2*5x=70cm

5x=70 divided by 2,35

5x=35

x= 35 divided by 5, 7

X=7cm.

Length =3x=3*7=21cm

Breadth =2x=2*7=14cm

Please mark my answer as the BRAINILIEST and follow me too

5 0
3 years ago
Which of the following are correct statements about the slope formula? <br><br>Check all that apply.
WARRIOR [948]
We know, Slope = y2-y1 / x2-x1
& also, slope = rise / run

In short, Your Answer would be Option A & C

Hope this helps!
8 0
3 years ago
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