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3 years ago

Find – 8 + (-15) A: 23 B: -23 C: -7 D: 7

Mathematics

2 answers:

adell [148]3 years ago

6 0

Answer:

B: -23

Step-by-step explanation:

$-8+(-15)\\\\-8-15\\\\\boxed{-23}$

Option B should be the correct answer.

Hope this helps.

malfutka [58]3 years ago

4 0

B. -23
You add and keep the negative symbol since they are both negatives and you are adding.

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Answer: B

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Pierre is rowing his kayak on a lake. He moves miles in 18 minutes. At this rate, how far would he move in 30 minutes?

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4 years ago

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Two sides of a triangle have lengths of 7 and 15. Which inequality represents the possible lengths for the third side?

kirill115 [55]

Answer:

Step-by-step explanation:

From the triangle inequality, we know that the two small sides must be greater than the largest side. Let's let x be the third side:

$7+15>x$

However, 15 can also be our largest side. So:

$7+x>15$

Let's solve for x for both inequalities.

First inequality:

$7+15>x$

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$22>x$

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$x$

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$7+x>15$

Subtract 7 from both sides:

$x>8$

So, we have the compound inequality:

$x>8\text{ and } x$

Combine:

$8$

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3 years ago

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Mayra bought $$ grams of rice. Anika bought $$ more than Mayra bought. Select ALL of the equations that represent the relationsh

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4 years ago

Sheila went shopping and spent $120 on a coat. She then used 2/3 of the remaining money to buy a dress. She was left with 1/5 ot

Masja [62]

Answer:

Sheila had $300 at first

Step-by-step explanation:

Given that:

Sheila spent:

for coat = $120

Let the original money be x so,

dress for = $(2/3(x - 120 ))

Now she left with = 1/5x

Now by adding all the amounts we get the original amount x:

x = 120 + (2/3(x - 120)) + 1/5x

By simplifying:

x = 120 + 2/3x - 240/3 + 1/5 x

adding like terms:

x = 120 - 80 + 2/3*5/5x + 1/5*3/3x

x = 40 + (10+3)x/15

x = 40 + 13x/15

x - 13x/15 = 40

Taking LCM

(15x - 13x)/15 = 40

2x/15 = 40

Multiply both sides by 15/2

x = 40*15/2

x = $300

so Sheila had $300 at first

i hope it will help you!

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3 years ago