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inysia [295]
4 years ago
13

Which steps could be used to solve this story problem? PLEASE HELP ULL GET MARK BRAINLIEST IF U ANSWER IT FIRST PLZZ AND 7 PTS P

LZ
At the art store paint costs $5, brushes cost $3, and packs of pastel crayons cost $13. Kari bought 3 pots of paint, 4 brushes, and 3 packs of pastel crayons.

How much money did Kari spend?

A.
Divide $13 ÷ 3. Then add $5 and 4. Then add the quotient and the sum together and subtract 3.

B.
Add $5 and 3. Then add $3 and 4. Then add $13 and 3. Then add the 3 sums together.

C.
Multiply $5 × 3. Then multiply $3 by 4. Then multiply $13 by 3. Then add the products together.

D.
Subtract 3 from $13. Then subtract $3 from 4. Add the two differences together and multiply by $5.
Mathematics
2 answers:
Fiesta28 [93]4 years ago
4 0
The answer would be C.
True [87]4 years ago
3 0
<span>C.
Multiply $5 × 3. Then multiply $3 by 4. Then multiply $13 by 3. Then add the products together.

You are given the quantity and the cost of one, so all you would have to do id multiply and add.</span>
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A type of bacteria has a very high exponential growth rate of 80% every hour. If there are 10 bacteria, determine how many will
Lana71 [14]
<h3>There are 189 bacteria in 5 hours</h3><h3>There are 13382588 bacteria in 1 day</h3><h3>There are 10(1.8)^{168} bacteria in 1 week</h3>

<em><u>Solution:</u></em>

Given that,

A type of bacteria has a very high exponential growth rate of 80% every hour

There are 10 bacteria

<em><u>The increasing function is given as:</u></em>

y = a(1+r)^t

Where,

y is future value

a is initial value

r is growth rate

t is time period

From given,

a = 10

r = 80 \5 = \frac{80}{100} = 0.8

<em><u>Determine how many will be in 5 hours</u></em>

Substitute t = 5

y = 10(1 + 0.8)^5\\\\y = 10(1.8)^5\\\\y = 10 \times 18.89568\\\\y \approx 188.96

y = 189

Thus, there are 189 bacteria in 5 hours

<em><u>Determine how many will be in 1 day ?</u></em>

1 day = 24 hours

Substitute t = 24

y = 10(1 + 0.8)^{24}\\\\y = 10(1.8)^{24}\\\\y = 10 \times 1338258.84\\\\y = 13382588.45\\\\y \approx 13382588

Thus, there are 13382588 bacteria in 1 day

<em><u>Determine how many will be in 1 week</u></em>

1 week = 168

Substitute t = 168

y = 10(1 + 0.8)^{168}\\\\y = 10(1.8)^{168}

Thus there are 10(1.8)^{168} bacteria in 1 week

6 0
3 years ago
Name the intersection of plane ACG and plane BCG
Ira Lisetskai [31]
<u><em>Answer:</em></u>
CG

<u><em>Explanation:</em></u>
A plane is defined using three points.
The intersection between two planes is a line

<u>Now, we are given the planes:</u>
<span>ACG and BCG
</span>
By observing the names of the two planes, we can note that the two points C and G are common.
This means that line CG is present in both planes which means that the two planes intersect forming this line.

Hope this helps :)
3 0
4 years ago
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Elena-2011 [213]

Answer:x=2, y=1, z=-1

Step-by-step explanation:

Given

2x+y+z=4----1

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Add 2 & 3 we get

4z=-4

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Put value of z in 1 & 2

2x+y-1=4

2x+y=5----3

x-y+3(-1)=-2

x-y=1------4

add 3 & 4 we get

x=2

Put x & z in 1

y=1

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