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MAXImum [283]
4 years ago
11

Mrs. Kennedy is buying pencils for each of 315 students at hamilton elementary. The pencils are sold in boxes of tens. How can s

he use rounding to divide how many pencils to buy?
Mathematics
1 answer:
Galina-37 [17]4 years ago
8 0

315 / 10 = 31.5

4 and down stay the same,

5 and up round up

31.5 = 32

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Please explain how to do this!!!
mariarad [96]

Answer:

17) x = 58.1 units

18) x = 17 units

Step-by-step explanation:

The concept of similar triangles will be applied.

It is evident that the AAA congruence property is responsible for the similarity of the two triangles in the 2 cases. The theorem is

- Triangles are similar if the measure of all three interior angles in one triangle are the same as the corresponding angles in the other.

So, the corresponding sides from the two triangles can be written as a ratio of one another

17)

The most obvious tell here is the largest angle in the two triangles, the sides directly opposite this angle in the two triangles can be written in a ratio such that

(95.2/13.6) = 7

indicating that the bigger triangle is exactly 7 times the smaller one.

So,

(95.2/13.6) = (53.2/7.6) = (x/8.3) = 7

x = 7 × 8.3 = 58.1

18)

The obvious tell here is the smallest common angle for the two triangles, the two other corresponding sides can then be written in a ratio, matching the bigger side in the two triangles to each other.

(39.5/7.9) = (37.5/7.5) = (x/3.4)

(x/3.4) = 5 (Indicating thay the bigger triangle is 5 times bigger than the smaller one.

x = 3.4 × 5 = 17 units.

Hope this Helps!!!

3 0
3 years ago
Sam has 3x + 4 dollars saved. Tessa has saved 7x + 16 dollars. Together they
Tanya [424]

Answer: b) is the answer

Step-by-step explanation:

3x + 4 + 7x + 16 = 110

10x + 20 = 110

10 x    =  90

x = 9

Thank you,  Dear.

4 0
3 years ago
Use the equation to complete an algebraic proof that proves the answer is x = 7/6. Write your proof in your journal and upload y
Komok [63]

Answer:

x=7/6

Step-by-step explanation:

subtract the 4x from both sides of the equation

(2x+6)-4x=4x-3-4x

find common denominator

(2x+6)/5+(5(-4)x)/5=4x-3-4x

then combine fractions

(2x+6+5(-4)x)/5=4x-3-4x

then multiply the 5&4

(2x+6-20x)/5= 4x3-4x

combine terms

(-18x+6)/5= -3

then multiply everything by 5

-18x+6= -15

subtract the 6 from both sides

-18x= -21

divide -21 by -18

(-21)/(-18)=x

find greatest common multiple (3) and solve

x = 7/6

5 0
3 years ago
Can someone help me?
I am Lyosha [343]

Answer:

j=5√80vπ⁴/2π

Step-by-step explanation:

Take the root of both sides and solve.

j=5√80vπ⁴/2π

-hope it helps

4 0
2 years ago
Complete the following t-chart.
poizon [28]
1) given
2) combine the -2-9 and get -11
3) add x to each side
4) add 11 to each side
5) divide 3 on each side
6) you get x=12 as the answer
3 0
3 years ago
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