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Andreyy89
3 years ago
11

The product of 7 and a number is at least 30

Mathematics
1 answer:
Greeley [361]3 years ago
5 0

Let x be the number multiplied by 7.

We get 7x.

At least 30 means GREATER THAN OR EQUAL TO 30 or ⩾ 30.

Put it all together now.

7x ⩾ 30

Divide both sides by 7.

x ⩾ 30/7

Done!

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Dots sells a total of 277 T-shirts ($2) and shorts ($3). In April, total sales were $656.
icang [17]

Answer:

Shorts = 112 and t shirts = 165

Step-by-step explanation:

Let S = shorts

Let T = t shirts

T + S = 277

$2T + $3S = $656

-2(T + S) = 277          so    -2T -2S = -544

2T + 3S = 656          so      2T + 3S = 656

                                         ------------------------

SO:  (subtract T's cancel out)   1S = 112

                                           divide by 1  so S = 112

Plug S into the top equation: T + s = 277   T + 112 = 277  so T = 165

5 0
3 years ago
Can someone help plz!!
zmey [24]

Answer:

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4 0
2 years ago
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GalinKa [24]

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Step-by-step explanation:

Numbers are assigned to each parking spot. Looking closely at the numbers assigned to each spot, the numbers are inverted and the number on each successive spot differ by one. The numbers are 86, 87, 88, 89, 90, 91

Therefore, the number assigned to the spot where the car would be 87

4 0
3 years ago
To solve the equation 12x = –72, you ?
IgorLugansk [536]

12x=-72 //:12

12x:12=-72:12

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Answer:

a

Step-by-step explanation:

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