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zheka24 [161]
3 years ago
10

2x-7=13 what is does x stand for?

Mathematics
1 answer:
andriy [413]3 years ago
7 0

Answer:

x=10

Step-by-step explanation:

2x-7=13

13+7=20

20/2=10

lets see if it works:

2(10)-7-13

20-7=13

it works! which means is 10

please mark me as brainliest!!<3

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After using some of the honey they collected for baking, they found that they only had 34 gallon of honey left. How much honey d
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Answer:

34 gallons of honey left

Step-by-step explanation:

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3 years ago
What is the 45th digit in the decimal equivalent of 1/7
Luden [163]
1/7<span> =  0.</span><span>142857 since this decimal is repeating divide 45/6(number of repeating numbers) and it gives you 7.5 so you know that it repeats this sequence 7 times plus an extra 3 numbers so the 45th decimal is 2</span>
3 0
3 years ago
The total weight of a rock depends on its size and is proportional to its density. In this context, density is the weight per cu
kow [346]

Answer:

d = \frac{w}{48}

If  \frac{1}{48} \\ is constant, say k

Then,

d = kw

∴ d ∝ w

Hence, weight is proportional to the density

Step-by-step explanation:

From the question,

Let w denote the weight of the rock in pounds

s denote the size of the rock in cubic inches and

d denote the density of the rock in pounds per cubic inch.

First, we will write the equation connecting w, s, and d.

We get

density (pounds/inch^{3} ) = \frac{weight(pounds)}{size (inch^{3}) }

That is,

d = \frac{w}{s}

Now, given a 48-cubic-inch rock with weight w pounds, to show the proportional relation between the weight and the density, we will write

d = \frac{w}{48}

If  \frac{1}{48} \\ is constant, say k

Then,

d = kw

∴ d ∝ w

Hence, density is proportional to the weight OR weight is proportional to the density

4 0
3 years ago
You’re repairing a large rectangular aquarium. The final step is to cover the glass with a protective film. The front and back o
Marianna [84]

Answer:

28 square metres

Step-by-step explanation:

Calculate the total surface area of the glass covered part of the rectangular aquarium

Surface area = 2(4 × 2) + 2(3 × 2)

= 16 + 12

Protective film needed = 28 square metres

6 0
3 years ago
Read 2 more answers
Number 5555555555555
bogdanovich [222]
The correct answer is B
8 0
3 years ago
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