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balandron [24]
3 years ago
14

Can anyone explain this?

Mathematics
1 answer:
AnnyKZ [126]3 years ago
7 0

Answer:

71v + 72

Step-by-step explanation:

9v-8(10v-9) distribute 8 × 10v, 8×9

9v - 80v+72

71v + 72

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Translate this phrase into a mathematic expression: “A number less than 7”
horsena [70]

Answer:

7 - ?

Step-by-step explanation:

Write and expression like and you should have a right answer. Hope this helps and good luck :)

5 0
2 years ago
Read 2 more answers
Two teachers purchase supplies for their classrooms.
inna [77]

Answer:

Cost of One Journal =  $3.99

Cost of One pen =  $0.59

Step-by-step explanation:

Let

Cost of One Journal = x

Cost of One pen = y

We can make equation from given statements.

Mr. Bowden purchases 18 journals and 40 pencils for $95.42.

18x+40y=95.42

Ms. Jacinto purchases 11 journals and 16 pencils for $53.33.

11x+16y=53.33

Now solving these equations to find the value of x

18x+40y=95.42--eq(1)\\11x+16y=53.33--eq(2)

Multiply eq(1) with 2 and eq(2) with 5

36x+80y=190.84\\55x+80y=266.65\\-\:\:\:\:-\:\:\:\;\:\:\:\:\:\:\:-\\---------\\-19x=-75.81\\x=\frac{-75.81}{-19}\\x=3.99\\

We get the value of x is: x=3.99

Now, putting value of x in equation 1 to find value of y.

18x+40y=95.42\\18(3.99)+40y=95.42\\71.82+40y=95.42\\40y=95.42-71.82\\40y=23.6\\y=\frac{23.6}{40}\\y= 0.59

So, we get the value of y: y = 0.59

Now, finding the costs:

Cost of One Journal = x = $3.99

Cost of One pen = y = $0.59

7 0
2 years ago
Whats 4x=28? whats the x for the answer?
Alik [6]
76 is the answer for x.
5 0
2 years ago
Write a recursive rule for an= Зn — 6.
mart [117]

Answer:

Explicit formula: a(n)=3n-6

Recursive formula: a(n)=-3+(n-1)3 <--

Step-by-step explanation:

a(n)=3n-6 where a(1)=3(1)-6=-3 and d=3

<u>Plug values into recursive formula:</u>

a(n)=a1+(n-1)d

a(n)=-3+(n-1)3

8 0
2 years ago
Jada researched the average rainfall in April for several different locations. This list shows her findings.
Georgia [21]

Answer:

it's correct

Step-by-step explanation:

there is one in 1 2/4 , one in 2 and 3 in 2 1/2

5 0
2 years ago
Read 2 more answers
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