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ryzh [129]
2 years ago
10

4. The equation 2x = - 10 is modeled below. What is the value of x makes the equation true?

Mathematics
1 answer:
zmey [24]2 years ago
3 0

Answer:

x = -5

Step-by-step explanation:

2x = -10 <== divide both sides by 2

/2      /2

x = -5

Check your work:

2x = -10

2(-5) = -10

-10 = -10

This statement is true

Hope this helps!

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12 workers build a wall in 10hours. How long do 5 workers build a wall​
snow_lady [41]

Answer:

24 hours

Step-by-step explanation:

If 12 workers take 10 hours to build a wall, assuming they build at the same rate, it would take one worker 120 hours to build a wall.

By this logic, it would take 120/5 or 24 hours for 5 workers to build a wall

5 0
3 years ago
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WHO CAN ANSWER THIS TOOO
Snowcat [4.5K]
<h2><u>Direct answer</u> :</h2>

Width of the enlarged photograph = 14 cm

<h2><u>Steps to derive the correct answer</u> :</h2>

Length of a small photograph = 6 cm

Width of a small photograph = 4 cm

Length of the photograph when enlarged = 21 cm

Let the width of the photograph when enlarged be x.

Which means :

= \tt 4 : 6 : : x : 21

=\tt  \frac{4}{6}  =  \frac{x}{21}

=\tt 4 \times 21 = 6 \times x

=\tt 84 = 6x

=\tt x =  \frac{84}{6}

=\tt x = 14

Thus, the value of x = 14

Therefore, the width of the enlarged photograph = <u>14 cm</u>

8 0
3 years ago
Question 2<br> Find the volume.
garik1379 [7]

Answer:

Volume of cone = 686π/3 or 718.67 in³

Step-by-step explanation:

Given the following data;

Radius, r = 7 in

Height, h = 14 inches

From the diagram, we can see that the object is a cone

To find the volume of a cone;

Mathematically, the volume of a cone is given by the formula;

V = \frac{1}{3} \pi r^{2}h

Where;

V is the volume of the cone.

r is the radius of the base of the cone.

h is the height of the cone.

Substituting into the equation, we have;

Volume = \frac{1}{3} * \frac {22}{7} *7^{2}*14

Volume = \frac{1}{3} * 22 * 7 * 14

Volume = \frac{1}{3} * 2156

Volume = 718.67

Volume of cone = 718.67 in³ or 686π/3 in³

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3 years ago
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Answer:

lol haveagreatandablessdday!!!

6 0
3 years ago
△EFG≅△JKL.<br><br> What is m∠K?<br><br><br> ___°
madam [21]

K is the middle letter of the triangle JKL so it would be the same as the middle letter of the triangle EFG

so K = F

 F = 62 degrees, so K = 62 degrees

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