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iris [78.8K]
3 years ago
11

How to divide 33 photos into two groups so the ratio is 4 to 7

Mathematics
1 answer:
Nataliya [291]3 years ago
3 0
33 photos in a 4x to 7x ratio

4x + 7x = 33
11x = 33
x = 3

33 photos can be put in a 4(3) to 7(3) ratio

which is a 12 to 21 ratio

so 12 photos on one side, and 21 on the other side to get the ratio of 4 to 7

Note:
<span>a(b) = ab = a x b = a times b</span>
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Please show work will give alot of points
leva [86]
1. F=ma
F = (2500)(4.8)
F = 12,000 N
2. a = F/m
a = 250/40
a = 6.25m/s^2
3. m = F/a
m = 50/1.2
m ≈ 41.67 kg
4. Speed = Distance covered/time
= 2300/4.25*
≈ 541.18 mph
*15 minutes is 0.25 hours (15 times 4 = 60)

5. same formula above
250/45 ≈ 5.56 km/min

remember these formula triangles for the future :)

8 0
3 years ago
Find the product mentally.
jonny [76]
(2j+7)(2j−7)

=(2j+7)(2j+−7)

=(2j)(2j)+(2j)(−7)+(7)(2j)+(7)(−7)

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=4j2−49

5 0
3 years ago
Read 2 more answers
Rules for exponents help?
JulijaS [17]

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The expression is not equal to 1, so you can rule out selection a.

That leaves selection d, which is the correct choice:

... d. 1/x^a

_____

The rule for exponents is that an exponent in the numerator is the same as its opposite in the denominator, and vice versa.

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5 0
3 years ago
Sophia did push-ups every day for 7 days. Each day after the first day, she did 5 more push-ups than the day before. In total sh
Dafna1 [17]

Answer:

Push- ups on last day = 40

Step-by-step explanation:

According to given conditions:

Let push-ups on:

1st day = x

2nd day = x + 5

3rd day = x + 10

4th day = x + 15

5th day = x + 20

6th day = x + 25

7th day = x + 30

Now total push ups = adding all

x + x + 5 + x + 10 + x + 15 + x + 20 + x+ 25 + 30 + x = 175

By adding same terms:

7x + 105 = 175

Subtracting 105 from both sides

7x + 105 - 105 = 175 - 105

7x = 70

Dividing both sides by 7 we get:

x = 70/7

x = 10

Now calculating push-ups on days:

1st day = x = 10

2nd day = x + 5 = 10 + 5 = 15

3rd day = x + 10 = 10 + 10 = 20

4th day = x + 15 = 10 + 15 = 25

5th day = x + 20 = 10 + 20 = 30

6th day = x + 25 = 10 + 25 = 35

7th day = x + 30 = 10 + 30 = 40

So number of push-ups on 7th (last) day is 40.

I hope it will help you!

8 0
3 years ago
You invest $1,300 in an account that has an annual interest rate of 5%, compounded annually. How much money will be in the accou
KIM [24]

Answer:

A=Pe^rt

P= princible (1300)

e= (2.71828)- function on a graphing calculator

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t = time (10 years)  

A = 1300e^.05(10)

A = 1300e^.5

A = 2143.337652

A = 2143

7 0
3 years ago
Read 2 more answers
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