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Vinvika [58]
3 years ago
15

If 3 is added to twice a number the result is 17

Mathematics
1 answer:
lyudmila [28]3 years ago
8 0
3+2x=17
x=the number
2x=14
x=7
now plug it in to check your answer
3+2(7)=17
3+14=17
17=17
the answer was correct
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If a heart beats 30 times in 40 seconds. How many times will it beat in 1 year?
Murljashka [212]

Answer:

10950

Step-by-step explanation:

1 year = 365

365 × 30

10950

7 0
2 years ago
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Use Heron's formula to find the area of the triangle. Round to the nearest square foot.
Sphinxa [80]

Answer:

A ≈ 2 ft²

Step-by-step explanation:

The area (A) of a triangle using Heron's formula is

A = \sqrt{s(s-a)(s-b)(s-c)}

where s is the semiperimeter and a, b , c the sides of the triangle.

s = \frac{a+b+c}{2} = \frac{4+4+1}{2} = \frac{9}{2} = 4.5

Then

A = \sqrt{4.5(4.5-4)(4.5-4)(4.5-1)}

   = \sqrt{4.5(0.5)(0.5)(3.5)}

   = \sqrt{3.9375}

   ≈ 1.9843...

   = 2 ft² ( to the nearest square foot )

8 0
2 years ago
Miss Jones attended a a southern living home party she purchased a vase which cost $34.99The shipping charge was three dollars a
jenyasd209 [6]
The answer is $41.12
(Work is below)

First add the total of the vase and shipping-
Vase:                    $34.99
Shipping:              $   3.00
                         +__________
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Then calculate sales tax by multiplying $37.99 x 0.0825 -
Above Total:         $37.99
Sales Tax Rate:    $   0.0825
                         x__________
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You round down because ^ less than five (five or above you would round up)

Sales Tax:             $3.13

Then you add the sales tax to the above total

Vase:                    $37.99
Shipping:              $  3.13
                         +__________
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8 0
2 years ago
What time 30equals 200
Dovator [93]
The answer is 20/3 first you set a variable x and 30x=200 divid both side by 30 and get the final answer
8 0
3 years ago
Read 2 more answers
Barbara runs once around the track in 3 minutes 45 seconds. Liad runs around the track in 2
seropon [69]

Answer:

2/3rds of liad's run

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(8/3)/4 = 2/3

3 0
1 year ago
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