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3 years ago

Thank you for helping me!

Mathematics

1 answer:

hjlf3 years ago

4 0

The answer to the question is x = 1 , 4 or 7 ; The choice is D

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25% of what number equals 9?

astraxan [27]

Answer:

Step-by-step explanation:

25% × ? = 9

? =

9 ÷ 25% =

9 ÷ (25 ÷ 100) =

(100 × 9) ÷ 25 =

900 ÷ 25 =

5 0

3 years ago

Read 2 more answers

The answer to the equation |8x−5|=|11−8x|.

sergiy2304 [10]

Answer:

x=1

Step-by-step explanation:

4 0

3 years ago

Is this c I think i remember it was? But I need to know...

allsm [11]

<h3>Answer: B) 6 right and 9 down</h3>

We start with x-5. We want to add on some h value such that x-5+h = x+1, which solves to h = 6. So we must add on 6 to (x-5) to get to (x+1). This shifts the graph 6 units to the right.

As for the vertical shifting, we start with +7 and we end up at -2. The vertical distance is 7-(-2) = 9 units, so we must shift 9 units down.

5 0

3 years ago

Read 2 more answers

WILL MARK BRAINLIEST<br> the last two pics are for question two

DanielleElmas [232]

Answer:

1. 702 square centimeters

2. m∠YWX = 63°

Step-by-step explanation:

The total surface area is area of all the sides.

There are 2 triangles (slanted side) with base 14 and height 11. Thus area would be $2(\frac{1}{2}*14*11)=154$
There are 2 triangles (another slanted side) with base 10 and height 12. Thus area would be $2(\frac{1}{2}*10*12)=120$
There are two rectangles with base 10 and height 6. Thus area would be $2(10*6)=120$
There are two rectangles with base 14 and height 6. Thus area would be $2(14*6)=168$
The bottom is a rectangle with area 10 * 14 = 140

Adding all these up 154 + 120 + 120 + 168 + 140 = 702 centimeters square.

Angle WYX is equal to 46° (vertical angles are equal).

Now looking at triangle XWY, we know all three angles will add up to 180°. Given x =71° and Y = 46°, we can figure out W (Angle YWX)

71 + 46 + Angle YWX = 180

Angle YWX = 180 - 71 - 46 = 63°

Second answer choice is correct.

5 0

4 years ago

Please help!<br>what polynomial must be added to <br>−5x^3 + 4x − 3 so that the sum is x^2 − x − 1?

lakkis [162]

<h3><u>Solution:- </u></h3>

Let the number to be added be A

Now,

$\begin{gathered}\implies\quad \sf −5x^3 + 4x − 3 + A = x^2 − x − 1 \\\end{gathered}$

Transposing (−5x³+ 4x − 3 ) to other side-

$\begin{gathered}\\\implies\quad \sf A = x^2 − x − 1 -( −5x^3 + 4x − 3) \\\end{gathered}$

Remember if there is a -ve sign before a bracket the signs of whole of the terms changes on opening bracket

$\begin{gathered}\\\implies\quad \sf A = x^2 − x − 1 + 5x^3 - 4x + 3\\\end{gathered}$

Putting like terms together -

$\begin{gathered}\\\implies\quad \sf A = 5x^3 +x^2 - x -4x +3 -1 \\\end{gathered}$

$\begin{gathered}\\\implies\quad \sf A = 5x^3 +x^2 -5x +2 \\\end{gathered}$

$\longrightarrow$ Therefore, 5x³+x²-5x +2 should be added to −5x³+ 4x − 3 to get x²− x − 1

6 0

3 years ago