Mathematics High School

Somebody please help. this is quadratics
Solve each equation by taking square roots.
[tex]1.)6x^2=-90\\2.)b^2-4=-2\\3.)16x^2-7=-6\\4.)10p^2+9=239[/tex]

Answers

Answer 1

Answer:

1)

[tex]6x^2=-90\\x^2=-15\\\sqrt{x^2} =\sqrt{-15} \\x=i\sqrt{15} ,-i\sqrt{15}[/tex]

2)

[tex]b^2-4=-2\\b^2=2\\\sqrt{b^2} =\sqrt{2} \\b=\sqrt{2} ,-\sqrt{2}[/tex]

3)

[tex]16x^2-7=-6\\16x^2=1\\x^2=\frac{1}{16} \\\sqrt{x^2} =\sqrt{\frac{1}{16}} \\x=\frac{1}{4} ,-\frac{1}{4}[/tex]

4)

[tex]10p^2+9=239\\10p^2=230\\p^2=23\\\sqrt{p^2} =\sqrt{23} \\p=\sqrt{23},-\sqrt{23}[/tex]

Related Questions

HELP! WILL MARK AS BRAINLIEST (MATHEMATICS FORM 1 // BASIC ALGEBRA) pls help me answer these 4 question TYSM!!!​

Answers

Answer:

hope this help you a lot but it's too late

can you mark me as brainlist

Guys pls help me!!!!!!!!

Answers

Answer:

The answer is B .

Step-by-step explanation:

Hope it was helpful .

Answer:

A

Step-by-step explanation:

Look at the graph

C]              D]

0        =     20.00            

1        =     21.50

2        =     23.00

3        =     24.50

C= 1.50

20+ 1.50= 21.50

21.50+ 1.50= 23.00

23.00+ 1.50= 24.50

You always add 1.50 so the answer is A.

Hope this helps

Match the equation y = -3x + 4 to the corresponding graph below.

Answers

Answer: The light blue/purple line in the center

Explanation:

What is the value of x in the figure?
60°
(2x)

Answers

Answer:

The term X is a variable that takes the place of any number. ... Similarly 2 multiplied by X results to X plus X which means a number added to itself since multiplication is a repeated addition. So 2X = 2 * X = X + X = 2X.

Step-by-step explanation:

can i have brainliest

Answer:

x=30

Step-by-step explanation:

Since both of the acute angles have around or similar degrees, they will be the same. But even without that information we can see that each of the angles look the same. We already know that there are 360° in a circle, making 180° in a semi-circle. We can add 60+60 which will give us 120°. 360-120=240, which dividing that by 2 will give us 120, and if we were figuring out the other 2 would be 120° each.

10% of ___ =5 ples help

Answers

Answer:

50

Step-by-step explanation:

Which of the following is not a factor of the binomial 7x^2-28x?

1. x-4
2.x
3.7
4.-4

Answers

Maybe its #1 because 4 divided into all if them

Which equation represents a line which is parallel to the line y = -5x – 7?

Answers

Answer:y=7 is the equation of a line. The line has a y-value of 7 no matter what x-value is given.

Step-by-step explanation:

Answer:

any equation that has -5x +/- any number

Step-by-step explanation:

All you have to do to create an equation that is parallel is keep the slope the same but change its be value. (y = mx + b) <---- keep the mx the same

Plss help

Which number line shows the solution to 1x +1<5?

Answers

Answer:

second

Step-by-step explanation:

x +1<5

x<5-1

x<1<4

Determine whether the following can be modeled by a quadratic,
exponential or linear function? Cancer triples every six months.
quadratic
exponential
linear

Answers

Answer:

3 times 6 is 9

3 times 250 million is 750000000

Step-by-step explanation:

Use long multiplication to evaluate.

pease help me asp!!

1. all real numbers greater than –7

2. all real numbers less than 1

3. all real numbers greater than or equal to 9

4. all real numbers less than or equal to 10

5. all real numbers less than 8 and greater than 3

6. all real numbers greater than 7 or less than 5

7. all real numbers less than 5 and is at least 0
8. All real numbers less and 4 and is at least –9

9. all real numbers less than –2 and is at least –

10. all real numbers greater than –6 or less than –1

can someone help me with this? ill mark the brainl.iest!!

Answers

Answer:

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3. You need to be at least 39.37 inches tall (about a meter) to ride on a bumper car. Diego's cousin is 35.75 inches tall. How many more inches will he need to grow before Diego can take him on the bumper car ride?



Answers

Answer:

3.62

Step-by-step explanation:

39.37-35.75=3.62

Arc CD is [tex]\frac{2}{3}[/tex] of the circumference of a circle. What is the radian measure of the central angle?

a.) [tex]\frac{2\pi}{3}[/tex]
b.) [tex]\frac{3\pi}{4[/tex]
c.) [tex]\frac{4\pi }{3}[/tex]
d.) [tex]\frac{3\pi}{2}[/tex]

Answers

Answer:

b

Step-by-step explanation:

You place four orders for 50 tennis rackets which cost $65 per racket you receive all 200 rackets there is a delivery charge of $15 per order what is your average cost per racket including delivery charges

Answers

Answer:

65.30

Step-by-step explanation:

1. 50x4=200

2. 200x65=13,000

3. 13,000 + (15x4)

4. 15 x 4 = 60

5. 13,000 + 60

6. 13,060/200 = 65.3

Your average cost per racket including delivery charges is $65.30.

First step is to calculate the cost of 200 rackets

Cost of 200 rackets= 200 ×$65

Cost of 200 rackets= $13,000

Second step is to calculate the total delivery fee

Total Delivery fee= 15 × 4

Total Delivery fee=$60

Third step is to calculate the total cost including delivery cost

Total cost including delivery cost=$13,000 + $60

Total cost including delivery cos = $13,060

Fourth step is to calculate the Average cost

Average cost per rackets=$13,060/200

Average cost per rackets=$65.30

Inconclusion the average cost per racket including delivery charges is $65.30.

Learn more here:

https://brainly.com/question/11502325

Does this graph represent a function?

Answers

Yeas it does represent a function

What is the difference between the circumference of the outer circle and the circumference of the inner circle?

Answers

Answer:the Circumference of the outer cycle is longer than the circumference of the inner circle.

Step-by-step explanation:

1
1. You work full-time and make $17 per hour. What is your gross annual income?
A) $8160
B) $680
C) $35,360
D) $36,720

Answers

Answer:

C because if you make $17 dollars an hour that's 2,080 hours a year, Multiply that and you got C

what percentage is $4 of $16?

Answers

25% to get that you divide the part by the whole so 16/4 and then multiply by 100 to get the percentage

I NEED HELP RIGHT NOW PLEASE HURRY. IF YOU DONE KNOW PLEASE DONT ANSWER

Answers

Answer:

B. 31/108

Sorry for no explanation I used a calculator to do this question

Hope this helps!

What’s 2 + 2?
A. 0
B. 1
C. 2
D. 4

Answers

Answer:

are u kidding me it's literally D --_--

Step-by-step explanation:

answer is D. 4 because when u add two to two it is 4

Find the correct value of 2/3 plus 1/2 plus 5/12

Answers

Answer:

2/3 + 1/2 = 1.16666666667

therefore the answer is 1.58333333333

HELP!!!!!! BRAINLIEST AWARD!!!!!!
help with math problem below:

Answers

Answer:

Antonio is the right one

Answer:

∠ A = 123°

Step-by-step explanation:

The central angle A is equal to the arc that subtends it , so

∠ A = arc DE = 5x - 2

The angles subtended by the radii and tangents of a circle are supplementary

2x + 7 + 5x - 2 = 180 ← Antonio is correct

7x + 5 = 180 ( subtract 5 from both sides )

7x = 175 ( divide both sides by 7 )

x = 25

Then

∠ A = 5 - 2 = 5(25) - 2 = 125 - 2 = 123°






PLEASE HELP
Morty buys and sells computer parts. He bought two monitors for $25.00 each and later sold them for
$88.00 each. He bought four cases for $15.00 each and later sold them for $24.00 each. He bought
five memory modules for $20.00 each and later sold them for $55.00 each.

Answers

Answer: 600$$

Step-by-step explanation:

Problem ID: PRABEAF4
Suppose that during its flight, the elevation e (in feet) of a certain airplane and its time t, in minutes since takeoff, are related by a linear equation. Consider the graph of this equation, with time represented on the horizontal axis and elevation on the vertical axis. For the following situation, decide if the slope is positive, zero, or negative:



The plane is cruising at an altitude of 37,000 feet above sea level.

Answers

What is the question?

Please help Find PC=

Answers

PC = 9.0 - 1 decimal place. 9.03 - 2 decimal places
(didn’t know how many you wanted it to so here’s both lol)

What is the value of x in the figure?

Answers

Answer:

34

Step-by-step explanation:

This is because the whole angle is a right angle and equals 90°. You subtract 56 from 90 and get 34. Hope this helped you out!!

Answer:

i am pretty sure 34 (degrees)

Step-by-step explanation:

tell me if this is wrong.

Round 1,234.805 to the nearest whole number

Answers

Answer:

1235

Step-by-step explanation:

Please brainliest

Answer:

the is 1235 hope this helps

Step-by-step explanation:

Find the volume of the figure

Answers

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bit.[tex]^{}[/tex]ly/3a8Nt8n

Answer:

570 cm

Step-by-step explanation:

6*5*19

hope this and sorry if am wrong

can somebody plz help?e

Answers

Answer:

21.4

Step-by-step explanation:

We can solve for x using trigonometry

Here are the Trigonometric Ratios

Remember SOH CAH TOA

Sine = Opposite over Hypotenuse (SOH)

Cosine = Adjacent over Hypotenuse

Tangent = Opposite over Adjacent

We are given the measure of ∠T ( 72° )

We are also given the adjacent side length (6.6) ( Adjacent = the side length that is not the hypotenuse nor the opposite side length )

And we need to find the hypotenuse ( longest side length )

We this information we can use the trigonometric ratio Cosine to solve for x

That being said we want to set up an equation

(remember cosine = adjacent over hypotenuse )

[tex]cos(72)=\frac{6.6}{x}[/tex]

Now we solve for x

We can't get rid of the 6.6 itself so we want to multiply each side by x

now we have [tex]xcos(72)=6.6[/tex]

Step 2 divide each side by cos(72)

[tex]\frac{xcos(72)}{cos(72)} =x\\\frac{6.6}{cos(72)} \\x=\frac{6.6}{cos(72)}\\cos(72)=0.3090169944\\\frac{6.6}{0.3090169944} =21.35804865\\[/tex]

We're left with x = 21.35804865

Finally we want to round to the nearest tenth of a foot and we get that x = 21.4

Write 0,000000357 the following in scientific notation.​

Answers

Answer:

Step-by-step explanation:

3.57 x 10 ^ - 7 is the correct answer

2a+3b as a column vector

Answers

Answer:

Step-by-step explanation:

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