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fenix001 [56]
3 years ago
5

Evaluate the expression when a=−15 and b=−5. b2/a + 5

Mathematics
1 answer:
schepotkina [342]3 years ago
3 0

Answer:

  • -2.5

Step-by-step explanation:

<u>Evaluate the expression:</u>

  • b²/(a + 5)

When a= −15 and b=−5

<u>Substitute values:</u>

  • b²/(a + 5) =
  • (-5)² / (-15 + 5) =
  • 25/(-10) =
  • -2.5

------------------------------------------------------------------

<u>In case the expression is b²/a + 5, the value is:</u>

  • b²/a + 5 =
  • (-5)²/(-15) + 5 =
  • 25/(-15) + 5 =
  • - 5/3 + 5 =
  • 10/3

-------------------------------------------------------------------

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3 years ago
Answer with steps!... Thanks
NNADVOKAT [17]

Answer:

A)  False

B)  True

Step-by-step explanation:

For A) First let's do x/11 = 15. If you solved it by now, you will know that the answer is 0.7333333. So now you just do 11x15. Because the answer is different then the answer we got when doing the division, the answer for A is false

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5 0
3 years ago
A bed is 2400 a discount of 25% was given on the
Brrunno [24]

Answer:

800

Step-by-step explanation:

Given: The selling price of bed is 2400.

          Discount offered is 25%

Lets assume the cost of bed be "x"

Discount offered on the cost price of bed= \frac{25}{100} \times x= 0.25x

∴ Discount offered on the cost price of bed= 0.25x

We know the selling price of bed after discount provided.

Finding the cost price of the bed.

⇒ x-0.25x= 2400

⇒ 0.75x= 2400

cross multiplying both side.

∴ x= \frac{2400}{0.75} = 3200

∴ Cost price of the bed is 3200.

We know selling price of the bed is 2400.

Now, finding the saving.

Saving on the price of bed= Cost price- selling price

Saving= 3200-2400= 800

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nikitadnepr [17]

There are infinite many planes that contain each line and point

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As a general rule, a line and a point can be used to draw as many planes as possible

This means that there are infinite many planes possible

Hence, there are infinite many planes that contain each line and point

Read more about planes and points at:

brainly.com/question/14366932

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8 0
2 years ago
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