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Aleonysh [2.5K]

2 years ago

8

Round 5.5 to the nearest whole numberA. 6B. 5C. 7.5D. 10

1 answer:

love history [14]2 years ago

6 0

Answer:

A. 6

Step-by-step explanation:

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Use f(x) = 2 x and f-'(x) = 2x to solve the problems.

Marrrta [24]

Answer:

a) 1

b) 2

c) 2

Step-by-step explanation:

a) $f(2)$ means find the output for $\frac{1}{2}x$ when $x=2$ .

$\frac{1}{2}(2)$

$\frac{2}{2}$

$1$

b) $f^{-1}(1)$ means find the output for $2x$ when $x=1$

$2(1)$

$2$

c) If $f$ and $f^{-1}$ are truly inverses then $f(f^{-1}(u))=u$ and $f^{-1}(f(u))=u$ as long as $u$ satisfies the domains.

So we should be able to conclude that $f^{-1}(f(2))=2$ with no work.

However, I will also show work.

$f^{-1}(f(2))$

$f^{-1}(1)$ since $f(2)=1$ from part a.

$2$ since $f^{-1}(1)=2$ from part b.

6 0

2 years ago

There are 30 seventh-grade students and

Alisiya [41]

The answer is A. 1 to 3

8 0

3 years ago

Find the value of x so that FED ~ZYZ <br> need help asap

Paul [167]

Answer:

x=7.5

Step-by-step explanation:

To show that the triangles are similar, we simply need to show that all sides are proportionate.

So, we create a proportion

$\frac{FE}{ZY} =\frac{ED}{XY} = \frac{FD}{XZ}$

Then we plug in the values

$\frac{6}{12} = \frac{7}{14} = \frac{2x-5}{22}$

$\frac{6}{12}$ and $\frac{7}{14}$ can be simplified to $\frac{1}{2}$ , so that is our ratio of similarity

then we know

$\frac{1}{2} = \frac{2x-5}{22}$

Now solve

1. Cross multiply

2×(2x-5) = 22

2. Distribute

4x-8 = 22

4x=30

x=7.5

There is your answer, x=7.5

Hope this helped.

8 0

2 years ago

The lower supports are and the area of the two supports is square meters. The upper arch can be decomposed as one semicircle wit

Galina-37 [17]

Answer:

The lower supports are <u>Congruent Rectangles</u> and the area of the two supports is<u> 24 square meters.</u>

The upper arch can be decomposed as one semicircle with radius<u> 6 </u>meters minus a semicircle with radius 3 meters.

The area of the archway is <u>(13.5 π</u> + 24) square meters.

Step-by-step explanation:

See attachment for the firgure,

In order to determine the area of archway = The area of upper support + area of lower support.

As given, the lower support are two congruent rectangles consists of dimension 3 m × 4 m

Therefore, the area of lower support can be written as,

The area of lower support = 3 × 4 + 3 × 4 = 12 + 12 = 24 square m.

Now, the upper support arch can be decomposed as the two concentric semi circles having radius 3 m and 6 m,

Hence, the area of the upper support = Area of semi circle having radius i.e 6 m - Area of semi circle having radius i.e 3 m

=> π6²/2 - π3²/2= 27π/2= 13.5π square m

Therefore, the area of the archway = (13.5 π + 24) square meters

4 0

3 years ago

Find the value of the ratio x ÷ y if the equation is 5x²-13xy+8y²

Maslowich

Answer:

x÷y=8/5 or 1÷1

Step-by-step explanation:

Please mark as brainliest

5 0

3 years ago