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4 years ago

What is 4x=10. I need to know for a test

Mathematics

2 answers:

love history [14]4 years ago

5 0

x=2.5 pls give brainliest hope i helped

mafiozo [28]4 years ago

4 0

You would divide 4 from each side and that means that you would get 10/4 and that doesn’t go in evenly so you know it will be a decimal. You then solve the division and get 0.25 so that means that x=0.25

No can I please have brainliest because I have you an explanation?

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Can someone tell me where to put both of the answer questions

astraxan [27]

Months would go on the bottom and it should be number of tables served on the side hope this helps

4 0

4 years ago

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What is the equation of the quadratic graph with a focus of (3, 4) and a directrix of y = 8?

aksik [14]

Answer:

The equation of the quadratic graph is f(x)= - (1/8) (x-3)^2 + 6 (second option)

Step-by-step explanation:

Focus: F=(3,4)=(xf, yf)→xf=3, yf=4

Directrix: y=8 (horizontal line), then the axis of the parabola is vertical, and the equation has the form:

f(x)=[1 / (4p)] (x-h)^2+k

where Vertex: V=(h,k)

The directix y=8 must intercept the axis of the parabola at the point (3,8), and the vertex is the midpoint between this point and the focus:

Vertex is the midpoint between (3,8) and (3,4):

h=(3+3)/2→h=6/2→h=3

k=(8+4)/2→k=12/2→k=6

Vertex: V=(h,k)→V=(3,6)

p=yf-k→p=4-6→p=-2

Replacing the values in the equation:

f(x)= [ 1 / (4(-2)) ] (x-3)^2 + 6

f(x)=[ 1 / (-8) ] (x-3)^2 +6

f(x)= - (1/8) (x-3)^2 + 6

8 0

4 years ago

-4n+7+2n=1<br> a. 1<br> b. 3<br> c. -3<br> d. 4

fomenos

-4n + 7 + 2n = 1

First, simplify -4n + 7 + 2n to -2n + 7. / Your problem should look like: -2n + 7 = 1
Second, subtract 7 from both sides. / Your problem should look like: -2n = 1 - 7
Third, simplify 1 - 7 to -6. / Your problem should look like: -2n = -6
Fourth, divide both sides by -2. / Your problem should look like: n = $\frac{-6}{-2}$
Fifth, simplify $\frac{6}{-2}$ to $-\frac{6}{2}$ / Your problem should look like: n = $\frac{6}{2}$
Sixth, simplify $\frac{6}{2}$ to 3. / Your problem should look like: n = 3

Answer: n = 3 (B)

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4 years ago

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Sally bought a soft drink for 3 dollars and 9 candy bars. She spent a total of 48 dollars. How much did each candy bar cost?

RideAnS [48]

Each candy bar is $5.11. If you divide 48 by 9 you get 5.33, so you just multiply 5.33 by 9, then add three. You don't get the answer then. That's why you need to reduce it 0.11 every time to multiply it by 9 and add three. When you reach the reduced number 4.99, add 0.01. Eventually you will reduce it down to 5.00, multiply that by 9 and you will get 45. If you add three dollars to that it's 48.

The answer is $48.

Hope I helped.

4 0

3 years ago

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bearhunter [10]

Answer:5n+6

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=1+(-5)(n-1) or 1+-5n+5

an=-5n+6

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3 years ago