Mathematics High School

Find the roots of the equation: f(x)=64x2+6=31

Find The Roots Of The Equation: F(x)=64x2+6=31

Answers

Answer 1

Answer:

5/8, -5/8

Step-by-step explanation:

64x^2 = 25

divide both sides by 64

x^2 = 25/64

take the square root of both sides, and the negative square roots

Answer 2

Answer:

x = 5/8=0.625 and x = -5/8=−0.625

Step-by-step explanation:

f(x)=64x^2+6=31

Subtract 6 from both sides.

64x^2+6=31

Subtract 6 from 31 to get 25.

64x^2=25

Divide both sides by 64.

x^2=25/64

Take the square root of both sides of the equation.

x=5/8=0.625

x=-5/8=−0.625

Related Questions

can someone pls help me i don’t get this

Answers

V = 60 as the triangle is looking like a equilateral triangle

Answer:

60 degrees

Step-by-step explanation:

This triangle looks like an equilateral triangle and the angle-indicating curvy lines are acute, so it should be 60 degrees.

Hope that helps!

Rodrigo practiced playing the guitar 15 1/3 hours over the past 3 weeks.
He practiced for 5 1/4 hours during the first week and 5 2/3 hours during the second week.
How much time did Rodrigo spend practicing during the third week? Use the numbers and symbols to select the equation that represents the problem. Then solve the equation. Symbols may be used more than once or not at all.
15 1/3, 5 1/4, 5 2/3, x, =, and +.

The equation that represents the problem is
a. 15 1/3 = x - 5 1/4 - 5 2/3
b. x = 15 1/3 + 5 1/4 + 5 2/3
c. x + 15 1/3 = 5 1/4 + 5 2/3
d. 15 1/3 = 5 1/4 + 5 2/3 + x

Answers

D, because we already know how much he spent in total so it isnt B, trust me its D

Answer: d. 15 1/3 = 5 1/4 + 5 2/3 + x

Step-by-step explanation:

15 1/3 (total) = 5 1/4 (first week) +5 2/3 (second week) +x (third week)

When you add the amount of time Rodrigo practiced each week, you get the total amount of time he practiced

explain why the expression 2y-y can be written as why

Answers

Answer:

y

Step-by-step explanation:

2y-y=y

Answer: 2y-y can be written as y because 2y means you have 2 y’s and 2y’s minus 1 y is just 1 y

Step-by-step explanation:

McKenzie earns $15 per lawn mowed she also earned $10 for babysitting she earned 100 total, what does that look like in algebra form? Please help.

Answers

Answer:

15a + 10b = 100

Step-by-step explanation:

Given:

Cost of each lawn mowed = $15

Cost of each babysitting = $10

Total money earned = 100

Find:

Algebra form

Computation:

Assume;

Number of lawn mowed = a

Number of babysitting = b

So,

15a + 10b = 100

What are the answers
2x = 10; x=?

-3x = 21;x=?

1/3x=6; x=?

-1/2x = -7;x?

​

Answers

Answer:

1) 5 2)7 3)18 4) 14

Step-by-step explanation:

The sum of a number and 9 is 21. Find the number.

Answers

Answer:

12

Step-by-step explanation:

10 is 70% of what number? If necessary, round to the nearest tenth.

Answers

Answer:

The required answer is 7.

Step-by-step explanation:

=10*70/100

=7

0.7X = 10

10 / 0.7 = 14.23

Use the distributive property to find the equivalent expression.
3(2 + x) =__+__x

Answers

Answer:

6+3x

Step-by-step explanation:

multiply each term in the parentheses by the outer term.

6 + 3x

3(2+x) is factored form
So you need to turn it back into standard form

The table shows the balance of an account each year.

Years Balance
0 $40
1 $42
2 $44
3 $46
What is the interest rate of the account? What is the balance after 10 years?

Answers

Answer:

The interest rate is $2, the balance after 10 years will be $60.

Step-by-step explanation:

Each year the balance of the account increases by $2, so that would be the interest rate. After 10 years, the account will have 40 + 2 * 10 which equals $60.

(-10) + (-10) = 10 –
PLS HELPPPP

Answers

Answer:

Step-by-step explanation:

-10 + -10 = -20

so

10 - _ = -20

10 - 30 = -20

Remove parantheses:
-10 + -10 = 10

Simplify:
-10 - 10 = 10

Simplify:
-20 = 10

It's false so there is no solution

Celia used celery, carrots, and tomatoes in a recipe. Use the clues to find the amount of each ingredient she used. CLUE 1: The amounts were 2/5 cup, 3/4 cup, and 5/8 cup. CLUE 2: There is less celery than tomatoes. CLUE 3: There is less tomatoes than carrots.

Answers

Answer:

Celery = 3/8 cups

Tomatoes = 2/5 cups

Carrot = 5/4 cups

Step-by-step explanation:

CLUE 1: The amounts were 2/5 cup, 3/4 cup, and 5/8 cup

CLUE 2: There is less celery than tomatoes.

CLUE 3: There is less tomatoes than carrots

From clue 2 and 3:

Tomato > Celery ; Carrots > tomatoes

From least to highest :

Celery < Tomatoes < Carrot

Arranging clue 1 in ascending order :

2/5 = 0.4

3/8 = 0.375

5/4 = 1. 25

Hence,

3/8 < 2/5 < 5/4

Celery = 3/8 cups

Tomatoes = 2/5 cups

Carrot = 5/4 cups

Find the measure of the missing angle.

Answers

A box indicates a 90° angle.

So to find m<a, we can setup the equation 41 + a = 90.

Now subtract 41 from both sides to get a = 49.

A shop makes £2,750 in March. It has an Easter sale and the profit for April is £3,162.50 Work out the percentage increase

Answers

Answer: 15%

Step-by-step explanation:

From the question, we are informed that a shop makes £2,750 in March while it made £3,162.50 in April. The increase will be:

= £3,162.50 - £2,750

= £412.50

Percentage increase = £412.50/ £2750 × 100

= 15%

Help please and tysm

6 x (5 + 4) - 3 - (2+1)

A 18
B) 30
C) 48
D) 54

Answers

Answer:

54

Step-by-step explanation:

how much grams are in a milligram ​

Answers

there are 1000 milligrams in 1 gram

Hope this helps

A certain sum of money gives $ 510 as compound interest 12¹/₂ % per annum for 2 years. Find the simple interest on the same sum of money at the same rate for the same period of time.

Answers

Answer:

$127.5

Step-by-step explanation:

Given data

P = $510

r= 12.5%

t= 2 years

The expression for simple interest is

SI= PRT/100

SI= 510*12.5*2/100

SI= 12750/100

SI= 127.5

Hence the Simple interest is $127.5

A measure of how much space something takes up ?

Answers

Answer:

Volume

Step-by-step explanation:

Mass is measured using a scale. Volume is the amount of space matter takes up. Volume can be measured by multiplying the length, width, and height of an object, or by using a measuring cup and seeing how the measurement of water changes in a cup. Density is the amount of matter an object has in a certain space.

Answer:

VOLUME

Step-by-step explanation:

The question is up there ☝

Answers

Answer:

D

Step-by-step explanation:

The parabola is translated down 2 units.

I might be wrong tho.

Need this answer asap

Answers

Answer:

Its sideways i cant see the question

Step-by-step explanation:

Leah puts together gift bags of toys to sell at the flee market. She places exactly 6 toys in each bag. She only sells full bags of toys Leah has 280 toy cars. She can fill 46 toy cars Part B Leah has enough toy trucks to fill 25 gift bags. How many toy cars and toy trucks were put in gift bags to sell at the flee market

Answers

Answer:

320 toy cars and 25 toy trucks

Step-by-step explanation:

21.4 rounded to hundredths place

Answers

You can’t so it’s stays the same (21.4) that’s your answer then

Answer:

21.40 or 21.40, it's rounded to the same number

Step-by-step explanation:

Please help 40 points!!!! What's a Translation of (x+15, y-20). WILL MARK BRAINLIEST FOR RIGHY ANSWER

Answers

Answer:

x= y-15

Step-by-step explanation:

hope it helps

IMPORTANT!! in a unit circle, what is the relationship between arc length and central angle?

Answers

The measure of an arc refers to the arc length divided by the radius of the circle. The arc measure equals the corresponding central angle measure, in radians. That's why radians are natural: a central angle of one radian will span an arc exactly one radius long.

I NEED HELP ASAP!!!!!!!!

Answers

Answer: b

Step-by-step explanation:

find the X and the Y intercept of
4x-y=12

Answers

Answer:

x-intercept:  (3,0)  

y-intercept: (0, -12)

I hope this helps!

find the missing value so that the line passing through the points has the given slope.
(10, y) and (3, 4); m= - 2/7

Answers

Answer:

y = 2

Step-by-step explanation:

use slope formula:

(4 - y) / (3 - 10) = -2/7

4-y / -7 = -2 /7

cross-multiply:

7(4 - y) = (-7)(-2)

28 - 7y = 14

-7y = -14

y = 2

When I subtract 14 from it,
the result is 13 more than 20.
what is the number? ​

Answers

Answer:47

Step-by-step explanation:

Make a hypothesis that the number is X, so X-14=20+13

X=20+13+14, eventually, you'll get that X=47

But I'm not sure if you mean 13 times more than 20, or just 13 more than 20

Write the ratio 1/4 km 2/3 km in the simplest form

Answers

Step-by-step explanation:

the ratio is given above

Step-by-step explanation:

the ratio is given above

The cereal box shown below is a rectangular prism. Find the surface area of the cereal box. ​

Answers

Answer:

580 cm^2

Step-by-step explanation:

First, find the area of the front and back. 20*10=200

There are 2 sides with 20*10 ( front and back) so we can multiply by 2. 200*2=400

Then, the sides. 3*20=60*2=120

Then, the top and bottom 10*3=30*2=60

400+120+60=580

Answer:

420

Step-by-step explanation:

60+60+30+30+120+120

hope this helped :)

Find the slope!!!
Quickly please

Answers

Answer:

the slope is m= 2

Answer:

2

Step-by-step explanation:

Slope is (y1 - y2) / (x1 - x2) for any 2 respective x's and y's.

For any of the points here, you get 2.

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