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3 years ago

Select all the expressions that are equivalent to 15n – 10.

Mathematics

1 answer:

Lilit [14]3 years ago

5 0

Answer:

Step-by-step explanation:

the expression is equivalent with

5(3n-2)=15n-10

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10. If x = -2, y=-6 and z= 4, find the value of 4xy<br>Z

Grace [21]

Answer:

192

Step-by-step explanation:

Given

4xyz ← substitute given values into expression

= 4 × - 2 × - 6 × 4 = - 8 × - 24 = 192

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2 years ago

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Answer:

All angles in a rectangle are congruent, because in a rectangle, all angles are 90 degrees.

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2 years ago

Sophie went to the lake with her family. First, they spent 1 1/4 hours of fishing. Then, they spent twice as much time swimming.

Cloud [144]

Overall, they spent 3 3/4 hours fishing and swimming.

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2 years ago

Find the length of EF

Lisa [10]

Answer:

Step-by-step explanation:

1. First, we need to set up an equation to find the value of x and then the length of EF.

2. We know that DG is equal to 33, so we can add all the three sections it's cut into altogether to get 33. Therefore, we get an equation of: $3x - 28 + 3x - 30 + x = 33$

3. (Solving for x)

Step 1: Simplify both sides of the equation.

$3x - 28 + 3x - 30 + x = 33$
$(3x+3x+x) + (-28-30)=33$
$7x - 58 = 33$

Step 2: Add 58 to both sides.

$7x - 58 + 58 = 33 + 58$
$7x = 91$

Step 3: Divide both sides by 7.

$\frac{7x}{7} = \frac{91}{7}$
$x = 13$

4. Now that we know x is equal to 13, we can plug that value in for the expression 3x - 30.

$3(13)-30$
$39 - 30$
$9$

Therefore, the length of EF is 9.

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3 years ago

What is 9 fourths divided by 3 forth so

Alexus [3.1K]

(a/b) x (c/d) = (a*c)/(b*d)

Therefore:

(9/4) x (1/3) = (9*1)/(4*3) = 9/12 = 3/4

Answer:

3/4

5 0

3 years ago

Read 2 more answers