MATHEMATICS MIDDLE SCHOOL

Solve the following quadratic equation.4x^2-10=186



x = -10 and 10

x = -7 and 7

x = -4 and 4

x = -6 and 6

Answers

Answer 1
Answer:

Answer:

x = -7 and 7

Step-by-step explanation:

4x^2-10=186 add 10 on each side

4x^2 =196 divide by 4  on each side

x^2 = 49 take a √  on each side

x = -7,7
Answer 2
Answer:

Answer:

B. x= -7 and 7

Step-by-step explanation:

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brady joined the band.In group 1 there are a total of 44 students.There are 8 students who play the oboe.There are 1 over 2 as many students playing the clarinet as the flute.How many students from group 1 play each instrument

Answers

There are 44 students total (in the group), so the number of oboe players, the number of clarinet players, and the number of flute players all add to 44.
b + c + f = 44
We know that there are 8 oboe players, so:
8 + c + f = 44
Subtract 8 from both sides
c + f = 36
There are half(1/2) as many people playing the clarinet as the flute. so however many people play the flute, there are half that number playing clarinet. We can say that the number of clarinet players = 1/2 * the number of flute players.
c = 1/2 * f
Plug 1/2 * f into the previous equation for c...
c + f = 36
1/2 * f + f = 36
Divide all the terms by 1/2, a.k.a. multiply by 2
f + 2f = 72
3f = 72
f = 24
So, there are 24 flute players. Plug that number back into one of our old equations:
c + f = 36
c + 24 = 36
c = 12
There are 8 oboe players, 12 clarinet players, and 24 flute players.

♥Please answer soon!♥Find the lateral area of the cone. Use 3.14 pi and round to the nearest whole unitThe Radious of the cone is 15 and the length is 28
A. 1,319cm^2
B. 2,639cm^2
C. 707cm^2
D. 2,026cm^2

Answers

I think it’s A, im not sure.

On a compass, due east is a 1/4 turn clockwise from due north. How many degrees are in a 1/4 turn?

Answers

Answer:

90^o

Step-by-step explanation:

We have been given that on a compass, due east is a 1/4 turn clockwise from due north.

Since we know that a compass is in form of a circle and the measure of degrees in a circle is 360 degrees.

To find the number of degrees in a one-fourth turn, we will divide 360 by 4.

\text{Number of degrees in a 1/4 turn of compass}=(360^o)/(4)

\text{Number of degrees in a 1/4 turn of compass}=90^o

Therefore, there are 90 degrees in a 1/4 turn of compass.
One full turn is 360 degrees. 1/4 of 360 degrees is 270
360-270=90 degrees. One fourth of a full turn is 90 degrees

6/15=3/x solve for x

Answers

Answer: 7.5


Step-by-step explanation:

• Cross multiply : start by multiplying 15 times 3

• You get 45, then you divide 45 by 6

• Therefore, this gives you 7.5

• Check your answer by plugging in 7.5 to x

• Both fractions should equal 0.4, meaning they are equal to each other

Answer:15/2


Step-by-step explanation:

Herta wants to build a picket fence in her front yard. Her design has fence posts that are 8.5 feet apart, with 19 pickets between each set of posts. If the pickets are 3 inches wide, how wide should the gaps be so that everything is evenly spaced?

Answers

8.5 Feet  = 102 inches

Pickets = 19 x 3  = 57 inches

Remaining = 102 inches - 57 inches = 45

If you put 19 pickets, there will be 20 gaps

So each will be 45 / 20 = 2.25 inches wide

hope this helps

100 POINTS AND BRAINLESTNote: Enter your answer and show all the steps you use to solve this problem in the space provided.

6×5+3×8

Answers

Hey!

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PEMDAS stands for the steps in solving an equation.

P - Parenthesis

E - Exponent's

M - Multiply

D - Divide

A - Addition

S - Subtract

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Expression:

= 6 × 5 + 3 × 8

Multiply first since its the first step in this equation:

= (6 × 5) + (3 × 8)

Simplify:

= 30 + 24

Answer:

= 54

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Hope This Helped! Good Luck!

*Furthersimplificationisinbold*

Answer:

54

Step-by-step explanation:

1- 6x5+3×8= Work out the division and multiplication at each side from left to right. Firstdothetimesalways.soforexample2×2=4;so6×5=30and3x8=24

2- 30+ 24= Work out the sum. Thendothesumforexample3+2=6.Sointhiscase30+24;youcandoas30+20=50+4=54

3- 30+24= 54

Feel free to ask more questions.
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