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Aleonysh [2.5K]
3 years ago
14

When 8 is subtracted from a certain number and the result is multoplied by 3

Mathematics
2 answers:
Natali [406]3 years ago
6 0
15
15 - 8 = 7
7 • 3 is 21
Natalija [7]3 years ago
6 0

Answer:

x=15

<em>hope</em><em> </em><em>this</em><em> </em><em>helps</em><em> </em><em>you</em><em>.</em><em>.</em><em>.</em>

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What is the perimeter of triangle PQR? Show your work.
xxMikexx [17]

Answer:

The perimeter of triangle PQR is 17 ft

Step-by-step explanation:

Consider the triangles PQR and STU

1. PQ ≅ ST = 4 ft (Given)

2. ∠PQR ≅ ∠STU  (Given)

3. QR ≅ TU = 6 ft (Given)

Therefore, the two triangles are congruent by SAS postulate.

Now, from CPCTE, PR = SU. Therefore,

3y-2=y+4\\3y-y=4+2\\2y=6\\y=\frac{6}{2}=3

Now, side PR is given by plugging in 3 for 'y'.

PR = 3(3) - 2 = 9 - 2 = 7 ft

Now, perimeter of a triangle PQR is the sum of all of its sides.

Therefore, Perimeter = PQ + QR + PR

                                   = (4 + 6 + 7) ft

                                   = 17 ft

Hence, the perimeter of triangle PQR is 17 ft.

7 0
3 years ago
A school bought $548 in basketball equipment and uniforms costing $29.50 each. The total cost was $2,023. Write an equation you
VladimirAG [237]
Equation:
Total cost = fixed costs + variable costs
2023 = 548 + 29.50x

Solution:
2023 - 548 = 29.50x
(2023 - 548)/29.50 = x
50 = x
3 0
3 years ago
Giving brainliest !! *easy*
lora16 [44]
31.4 bc 3.14 x 2 x 5
4 0
3 years ago
Read 2 more answers
If y=7 when x=2 find x when y=3
astraxan [27]
2/7=0.28571428571428571428571428571429
0.28571428571428571428571428571429*3=0.85714285714285714285714285714286
that is a long answer but it works

5 0
3 years ago
A carpenter worked 10 weeks on a particular job, 51/2 days per week and 7 3/4 hours per day. How many hours did the carpenter wo
Luden [163]

Answer:

= 426 1/4 hr.

Step-by-step explanation:

5 1/2 = 5.5 Days in a week

7 3/4 = 7.75 hr. Per Day

Total hours in a week = 5.5 × 7.75 = 42.625 hr in a week

In 10 weeks = 42.625 × 10 = 426.25 hr.

5 0
3 years ago
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