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Natali [406]
3 years ago
8

Eight less than a number divided by seven is two. Find the number.

Mathematics
1 answer:
slamgirl [31]3 years ago
4 0

Answer:

The missing number would be 22.

Step-by-step explanation:

The missing number would be, lets say <em>x</em>.

(<em>x</em> - 8) / 7 = 2

First, lets multiply 2 by 7.

2 * 7 = 14

Next, lets add 8 to 14.

8 + 14 = 22

The missing number would be 22.

To check this answer, subtract 8 from 22 which would be 14.

Then divide by 7 which would be 2. This answer is correct.

Therefor, the missing number, or x, would be 22.

Hope this helps!

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A rectangular piece of metal is 20 in longer than it is wide. Squares with sides 4 in long are cut from the four corners and the
Misha Larkins [42]

Answer:

Step-by-step explanation:

This is good!  The length of the metal is 20 inches longer than the width.  But we fold up 4-inch flaps on each side, so the height of the box is 4 inches, and the length and width will each decrease by 8 inches (4 inches on each side).  Since the length and width decrease by the same amount, the length will still be 20 inches longer than the width.  So the equations would be:

l = w + 20

vol = l x w x h = 1716 in3

1716 = (w + 20)(w)(4)

1716 = 4w2 + 80w

4w2 + 80w - 1716 = 0

4(w2 + 20w - 429) = 0

4(w + 33)(w - 13) = 0

w + 33 = 0, so w = -33

w - 13 = 0, so w = 13

Since the width can't be negative, the width of the box is 13 and the length is 33 (13 + 20).

But remember, the length and width of the piece of metal are each 8 inches longer than the box, so it was 41 inches by 21 inches.

7 0
3 years ago
Help !!!! Thank you!!!!
castortr0y [4]

Answer:

Option (G)

Step-by-step explanation:

Volume of the real cane = 96 in³

Volume of the model of a can = 12 in³

Volume scale factor = \frac{\text{Volume of the model}}{\text{Volume of the real can}}

                                 = \frac{12}{96}

                                 =\frac{1}{8}

Scale factor of the model = \sqrt[3]{\text{Volume scale factor}}

                                          =\sqrt[3]{\frac{1}{8}}

                                          =\frac{1}{2}

Therefore, scale factor of the model of a can = \frac{1}{2} ≈ 1 : 2

Option (G) will be the correct option.

3 0
3 years ago
A​ doctor's prescription calls for a daily intake containing 50 mg of vitamin C and 10 mg of vitamin D. Your pharmacy stocks two
blagie [28]
Setup
0.8x + 0.4y = 50
0.1x + 0.2y = 10 - Multiply by -2 and add

get
0.6x = 30
x = 50 mg compound A

.1 (50) + .2y = 10
5 + .2y = 10
.2y = 5
y = 25 mg compound B
8 0
3 years ago
The university needs to transport 421 fans from the stadium parking lot to the football game. If a van holds 10 people, how many
Tasya [4]
421/10= 42.1 vans since you can’t bring a 0.1 van you’ll have to bring a whole extra van so 43 vans

answer: one person will be in the partially full van
7 0
3 years ago
What's the value of x? Enter your answer in the box.<br> x = {}
Pani-rosa [81]

All three angles on a triangle always equal 180°.

Example: 100°+40°+40°=180°

102+39=141°

180-141=39°

x = 39°

3 0
2 years ago
Read 2 more answers
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