Why is the answer A? Plz explain.

Answers

Answer 1

Answer: $\bf f(x)=\cfrac{1}{2}x+a\n\n-------------------------------\n\n\stackrel{x=a}{f(a)}=\cfrac{1}{2}(a)+a\implies 3=\cfrac{1}{2}(a)+a\implies 3=\cfrac{a}{2}+a\implies 3=\cfrac{a+2a}{2}\n\n\n6=a+2a\implies 6=3a\implies \cfrac{6}{3}=a\implies \boxed{2=a}\n\n-------------------------------\n\nf(8)=\cfrac{1}{2}(\stackrel{x}{8})+(\stackrel{a}{2})\implies f(8)=\cfrac{8}{2}+2\implies f(8)=6$

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Which linear function equation would contain the points below? (-6,-8) and (12,4)
jane walked 4/5 mile on monday on tesday she wwalked 1//2 of the distance she walked on monday how many miles she walked on tuesday a 3/4 mile b 2/5 mile c 1/5 mile d 1/2 mile

A bottle rocket that was made in science class had a trajectory path that followed the quadratic equation y=-x^2+4x+6. What is the turning point of the rocket's path?1) (1,5)
2) (2,10)
3) (-2,-10)
4) (1,-5)

Answers

$y=-x^2+4x+6 \n \na =-1, \ b = 4 , \ c=6 \n \n The \ vertex \ is \ (x,f(x)) \n \nx=(-b)/(2a) =(-4)/(2\cdot (-1))=(-4)/(-2)=2\n \n f(2)=-x^2+4x+6 =-2^2+4 \cdot 2+6 =-4+8+6=10 \n \n The \ vertex \ is \ (2,10) \n \n \n Answer: \ 2) \ \ (2,10)$

5 roses cost $55.what will 4 rosses cost?

Answers

44... 5 x 11 = 55. 4 x 11 = 44

Use the distributive property to write an expression that is equivalent to 8(a+4)

Answers

Multiply it out!

8×a+8×4

8a+32

The price of a silk scarf is $32. The sales tax is $1.92. What is the sales-tax rate?

Answers

Answer:

sales-tax rate = 6%

Step-by-step explanation:

The price of a silk scarf is $32. The sales tax is $1.92

Let the sale tax rate be s%

Price of silk scarf = $32

Sale tax = s% of 32

Sale tax = $1.92

Thus,

s% of 32 = 1.92

First we change s% to decimal

$(s)/(100)* 32=1.92$

$s=(1.92* 100)/(32)$

$s=6\%$

Hence, The sales-tax rate is 6%

The sales tax =1.92/32.00=0.06=6%

Answer has to be in units

Answers

It's a deal. Give me a question, and I'll give you an answer in units.

Yep I'll try to answer to if you would give us something to answer..

Emily can ride her scooter 18 miles in 50 minutes.c. What is her unit rate in miles per hour?

Answers

Answer:

22.5 miles per hour (rounded answer)

Step-by-step explanation:

This is a fraction equal to

18 miles ÷ 0.8 hours

We want a unit rate where

1 is in the denominator,

so we divide top and bottom by 0.8

18 miles ÷ 0.8

0.8 hours ÷ 0.8

22.5 miles

1 hour

22.5 miles

hour

= 22.5 miles per hour

Answer:

there is no miles per hour because she wasn't riding for an hour

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