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2 years ago

Which pair shows equivalent expressions?

Mathematics

2 answers:

Elodia [21]2 years ago

7 0

Answer:

C. 2(2/5x + 2) = 4/5 x +2

Explanation:

2 x 2/5= 4/5,

Multiply 2 by 2/5 which equals 4/5

After multipling you have 4/5 + 2.

C is the only answer that has 4/5 + 2 on both sides giving you,

4/5 x + 2 = 4/5 x +2

balu736 [363]2 years ago

3 0

Answer:

2(2/5x+2)= 2*2/5x + 2*2= 4/5x+4

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What is the value of a in the equation a = 2 + 3a + 8? (5 points)

Luba_88 [7]

Step-by-step explanation:

a = 2 + 3a + 8

a = 10 + 3a

a - 3a = 10

-2a = 10

a = -5

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2 years ago

Given AB=10cm, CD=11cm, and AD=39cm, find the length of BC

liraira [26]

<u>Answer:</u>

BC = 18 cm

<u>Step-by-step explanation:</u>

As we can see from the diagram:

AB + BC + CD = AD

⇒ 10 cm + BC + 11 cm = 39 cm

⇒ BC + 21 cm = 39 cm

⇒ BC = 39 cm - 21 cm

⇒ BC = 18 cm

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1 year ago

The distance between the points (1,2) and (x,-1) is 5 units. Find the possible values of x

Mariulka [41]

Answer:

-3,5

Step-by-step explanation:

$d = \sqrt{(x _{2} - x _1) {}^{2} + (y _{2} - y _{1} {} ) {}^{2} }$

$5 = \sqrt{(x - 1) {}^{2} + ( - 1 - 2) {}^{2} }$

$5 = \sqrt{(x - 1) {}^{2} + ( - 3) {}^{2} }$

$25 = (x - 1) {}^{2} + 9$

$16 = (x - 1) {}^{2}$

$4 = x - 1$

$x = 5$

$- 4 = x - 1$

$x = - 3$

7 0

2 years ago

Please answer ASAP!! 20 points!

Ede4ka [16]

Answer: $\frac{1}{6} + \frac{1}{3} = \frac{1}{6} + \frac{2}{6} = \frac{3}{6}$ if you want 3/6 in simplifed form it will be 1/2

Step-by-step explanation: Find the Least common denominator ( LCD). Then add the numerators.

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2 years ago

The lowest temperature ever recorded in North America was -63°C. The lowest temperature ever recorded in South America was –32.8

Snowcat [4.5K]

9514 1404 393

Answer:

warmer by 30.2 degrees

Step-by-step explanation:

It might help to think of these values plotted on a number line. Both temperatures will be left of zero, with -63°C being farther to the left (colder).

The difference can be found by subtracting the colder temperature from the warmer one:

-32.8 -(-63) = -32.8 +63 = 63 -32.8 = 30.2 . . . degrees

The South America temperature -32.8°C is 30.2° warmer than the North America temperature.

3 0

2 years ago

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