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3 years ago

Someone answer them all tysm

Mathematics

2 answers:

zimovet [89]3 years ago

4 0

Answer:

1=13 2. 24. 3.7

Step-by-step explanation:

kati45 [8]3 years ago

3 0

D = 12

hope that helped you

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Rectangle B is a scale drawing of rectangle A using a scale factor of 150%. The area of rectangle A is 32 square units. What is

drek231 [11]

Answer:

The answer is 72 square units

Step-by-step explanation:

If rectangle A is scaled by 150% that means the length and breadth of rectangle A were both increased by 1.5(150%) to yield rectangle B.

So, the area of rectangle B is 1.5L x 1.5B = 2.25LB

But, LB = area of rectangle A which is = 32

So, area of rectangle B

= 2.25 x 32

= 72square units.

5 0

3 years ago

Read 2 more answers

If 4f(x)+f(5-x)=x2<br><br> What is f(x)?

aksik [14]

We are given that $4f(x)+f(5-x)=x^2$ .

Substitute x with 5-x, then the above equation becomes:

$4f(5-x)+f(5-(5-x))=(5-x)^2$ , that is

$4f(5-x)+f(x)=(5-x)^2$

So, we have the following system of equations:

i) $4f(x)+f(5-x)=x^2$
ii) $4f(5-x)+f(x)=(5-x)^2$

multiply the first equation by -4, so that we eliminate f(5-x)'s

i) $-16f(x)-4f(5-x)=-4x^2$
ii) $4f(5-x)+f(x)=(5-x)^2$

adding the 2 equations side by side we have:

$-15f(x)=-4x^2+(5-x)^2$

expanding the binomial, and collecting same terms we have:

$-15f(x)=-4x^2+(25-10x+x^2)$

$-15f(x)=-3x^2-10x+25$

dividing by -5:

$3f(x)=\frac{3}{5}x^2+2x-5$

dividing by 3:

$\displaystyle{f(x)= \frac{1}{5}x^2+ \frac{2}{3}x-\frac{5}{3}$

Answer: $\displaystyle{f(x)= \frac{1}{5}x^2+ \frac{2}{3}x-\frac{5}{3}$

6 0

3 years ago

Please help i’m having a hard time answering it

pshichka [43]

So we know 5ft to 1cm then
4x5=20ft
6x5=30ft

8 0

3 years ago

How do I find 2/3 of 12 slices of pizza eaten

MariettaO [177]

Multiply 12 slices by 2/3:

12 x 2/3 = (12 x 2) /3 = 24/3 = 8

The answer is 8

7 0

3 years ago

Read 2 more answers

A textbook store sold a combined total of 290 math and history textbooks in a week. The number of math textbooks sold was 64 mor

11Alexandr11 [23.1K]

Answer:

113

Step-by-step explanation:

290 - 64 = 226

226 ÷ 2 = 113

4 0

2 years ago