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4 years ago

Given the equation 5x + 23 = − 2x − 12, which order of operations completely solves for x?

1 answer:

5 0

D.Add 2x, then subtract 23, lastly divide by 7

the other answers would be incorrect because
you are supposed to subtract what's positive and add what's negative

Anyway, this would leave us with two possible answers ( a and d)

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Q1 Express in the form 1.0<br> 4:12

kherson [118]

Answer:

Step-by-step explanation:

4:12= 1:3

3 0

3 years ago

Divide 33 photos into two groups so the ratio is 4 to 7

jeka57 [31]

33 photos in a 4x to 7x ratio

4x + 7x = 33
11x = 33
x = 3

33 photos can be put in a 4(3) to 7(3) ratio

which is a 12 to 21 ratio

so 12 photos on one side, and 21 on the other side to get the ratio of 4 to 7

Note:
<span>a(b) = ab = a x b = a times b</span>

4 0

3 years ago

Gupty travelled 75 km 800 m by car and travelled 1800 km 40 m by aeroplane.How much did she travel altogether?

Alina [70]

Answer: 1875km 840m

Step-by-step explanation:

From the question, we are informed that Gupty travelled 75km 800m by car and travelled 1800km 40m by aeroplane.

The distance that she travel altogether will then be:

= 75km 800m + 1800km 40m

= 1875km 840m

8 0

3 years ago

A rather flimsy spherical balloon is designed to pop at the instant its radius has reached 3 centimeters. Assuming the balloon i

Anni [7]

Answer:

The radius is growing at the rate of 0.09 centimeter per second at the instant it pops.

Step-by-step explanation:

We are given the following information in the question:

A spherical balloon is designed to pop at the instant its radius has reached 3 centimeters.

The balloon is filled with helium at a rate of 10 cubic centimeters per second .

$\displaystyle\frac{dV}{dt} = 10~cm^3/sec.$

We have to find fast the radius is growing at the instant it pops.

Volume of spherical balloons =

$\displaystyle\frac{4}{3}\pi r^3$

Differentiating, we get,

$\displaystyle\frac{dV}{dt} = \frac{4}{3}\pi 3r^2 \displaystyle\frac{dr}{dt} = 4\pi r^2 \displaystyle\frac{dr}{dt}$

Putting the values, we get,

$10 = 4\times 3.14\times (3)^2\times \displaystyle\frac{dr}{dt}\\\\\frac{dr}{dt} = \frac{10}{4\times 3.14\times (3)^2} = 0.0884 \approx 0.09\\\\\frac{dr}{dt} = 0.09\text{ centimeter per second}$

The radius is growing at the rate of 0.09 centimeter per second at the instant it pops.

4 0

3 years ago

The Bread Alone Bakery has a daily overhead of

GarryVolchara [31]

We let C be the cost
x be the number of loaves

cost = overhead cost+ cost to bake - selling price

cost = 90 + 0.60x - 1.50x
cost = 90 - 0.90x

Hope this answers the question. Have a nice day. can you subscribe to my channel its flameboy21 valadez

5 0

4 years ago