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3 years ago

Please help, will make brainliest. Please hurry I need answers now.

Mathematics

1 answer:

schepotkina [342]3 years ago

6 0

Answer:

1. D

2. B

3. idk

4. A

Step-by-step explanation:

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What does SATT stand for in geometry

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SUM OF ANGLES IN A TRIANGLE THEOREM (SATT)

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3 years ago

Create a system of equations to represent the word problem. Then solve using the linear combination/elimination method. Show all

Leno4ka [110]

Answer:

Solution given:

model A printers [a] prints=80books per day

model B printers [b] prints=55books per day

total no of printers =9

no of model A printers be x

and

no of model B printers be [9-x]

According to the question;

ax+(9-x)b=670 books

substituting value of a and b; we get

80x+(9-x)55=670

80x-55x+495=670

25x=670-495=175

x= $\frac{175}{25}$ =7

So;

no of model A printers =x=7

no of model B printers =9-x=9-7=2

is your answer.

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2 years ago

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When rotating a figure, which is equivalent to a 1/4 -turn counterclockwise rotation?

levacccp [35]

360 clockwise / 4 = 90 clockwise

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3 years ago

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The speed of a car after accelerating for 8 seconds is inversely proportional to its weight. The car weighs 1600 kg and accelera

STatiana [176]

Answer:

With 800 extra kg load: speed = 66.667 km/h

With 2400 extra kg load: speed = 40 km/h

Step-by-step explanation:

Let's call the weight of the car W = 1600 kg, and its speed after accelerating for 8 seconds with this weight S = 100 km/h

If we load the car with 800 extra kg, the total weight will be:

W2 = W + 800 = 2400 kg

The relation between the weights is:

W2 / W = 2400 / 1600 = 1.5

If the weight increased 1.5 times, the relation between the speeds will be 1/1.5 (as they are inversely proportional), so:

S2 / S = 1 / 1.5

S2 = S / 1.5 = 66.667 km/h

If we load the car with 2400 extra kg, the total weight will be:

W3 = W + 2400 = 4000 kg

The relation between the weights is:

W3 / W = 4000 / 1600 = 2.5

If the weight increased 2.5 times, the relation between the speeds will be 1/2.5, so:

S3 / S = 1 / 2.5

S3 = S / 2.5 = 40 km/h

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3 years ago

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Answer this problem 3/14 divided 2/7 a. 2/7 b. 1/2 c. 1/7 d. 3/4

Ierofanga [76]

Answer:

Step-by-step explanation:

3/14 divided by 2/7 is 0.75

a.) 0.28571428571

b.) 0.5

c.) 0.14285714285

d.) 0.75

So d is the correct answer.

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3 years ago

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