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3 years ago

Simplify the expression: 7d? + 5 + 5d

Mathematics

2 answers:

PIT_PIT [208]3 years ago

8 0

Answer:

12d+5

Step-by-step explanation:

Alex787 [66]3 years ago

5 0

Answer:

7d + 5d = 12d

12d + 5

Step-by-step explanation:

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How many x-intercepts are in y=3x^2+5?

Pepsi [2]

Answer:

There are no x-intercepts.

Step-by-step explanation:

To find an x intercept we have to find where y = 0

So set the equation equal to zero

$0 = 3x^{2} +5$

$-5 = 3x^{2}$

$x = \sqrt{\frac{-5}{3} }$

Since the number under the radical is negative, we know there are no real solutions, and therefore there are no x-intercepts.

This is shown on the graph.

3 0

3 years ago

After 30 s, a runner is sprinting at 3 m/s. But, 10 s later, the runner is sprinting at 3.8 m/s. What is the runner's accelerati

erik [133]

We can consider that the runner did an acceleration of 0.8 m.s during the 10 seconds of difference.
We can deduce that the runner did an acceleration of 0.08 m.s every second during this time.

8 0

4 years ago

Read 2 more answers

What is the perimeter of the figure

anastassius [24]

Answer:

Option A.

$P=73.4\ units$

Step-by-step explanation:

see the attached figure with letters to better understand the problem

In this problem we have a triangle with a circle inscribed in it

$A.F=A.B\\C.B=C.D\\E.F=E.D$

step 1

Find the length side B.C

$C.B=A.C-A.B$

substitute the given values

$C.B=23-14=9\ units$

step 2

Find the length side C.D

Remember that

$C.D=C.B$

therefore

$C.D=9\ units$

step 3

Find the length side E.D

we know that

$E.D=E.C-C.D$

substitute the given values

$E.D=22.7-9=13.7\ units$

step 4

Find the length side E.F

Remember that

$E.F=E.D$

therefore

$E.F=13.7\ units$

step 5

Find the length side A.F

Remember that

$A.F=A.B$

therefore

$A.F=14\ units$

step 6

Find the perimeter

$P=23+22.7+13.7+14$

$P=73.4\ units$

6 0

3 years ago

A road-roller levels 3000m of road in 4hours How many metres does it level in a 24 hourday? please help me

Naya [18.7K]

Answer:

18,000 meters

Step-by-step explanation:

We know:

v = 4 and t = 24

Substitute:

{ v = 4 ⇒ INTO FORMULA ⇒ D = V × T : D = 4 × 24

{ t = 24

Cross out the common factor:

⇒ 6 × 3000

Calculate the product or quotient:

⇒ 18,000

7 0

3 years ago

For Thanksgiving Break Nykouth and her family is going to visit relatives in Nebraska. Her dad has found a hotel room at the Hil

taurus [48]

Answer:

109n + 35

Step-by-step explanation:

I'm not sure what you are asking because you have no question in there

8 0

3 years ago