Mathematics High School

Also,How do I factorise these?

x²-49

x²-9

x²-16​

Answers

Answer 1

Answer:

Step-by-step explanation:

x2 - 49

Both are squares so

Square root (x2) - Square root (49)

= x - 7

The other two answers are x - 3 and x - 4

Answer 2

Answer:

Use the formula (x-a)(x+a)=x^2 - a^2

so what is the square root of 49, 9, and 16? By finding the square root you get a, and you can just plug it into the formula. For example the first one, 7 is the square root of 49. So, (x-7)(x+7)

Related Questions

if the scientific notation is 9.63x10^-3 what would it look like in standard form? MARKING BRAINLIEST!!!!

Answers

Answer:

.00963

Step-by-step explanation:

Since its 10^-3, the decimal point moves to the left 3 times. hope this helped :)

Find that x and y intercept 4x-5y=40

Answers

Answer:

x intercept: 10, y intercept: -8

Step-by-step explanation:

make into y = mx + b

4x = 5y + 40

4x - 40 = 5y

y = 4/5x - 8

plug in 0 for x, to find y intercept

y = -8

plug in 0 for y, to find x intercept

0 = 4/5x - 8, x = 10

yo im timed please help!! at the top it says "car A is traveling east at a steady speed of 45 mph. after 2 hours it is 100 miles east of Johnstown . car B is traveling east on the same road. its distance east of Johnstown is represented by the graph" il give 20 more points if you're correct

Answers

Answer:

it could be C or a

Step-by-step explanation:

more likey c be sorry if it's wrong

PLEASE HELP FOR BRAINLEIST

Answers

Answer:

25.) Slope of AB = 5

Slope of CD = -1/5

Perpendicular

26.) Slope of EF = -3/5

Slope of GH = -3/5

Parallel

Step-by-step explanation:

Use this formula to find slope. [tex]\frac{y2 - y1}{x2 - x1}[/tex]

Parallel lines have the same slope

Perpendicular lines have the opposite reciprocal and sign

25.)

Plug in AB slope is 5

2 - 7/ 3 - 4 = -5/-1 = 5

Plug in for CD slope is -1/5

3 - 4/ 2 - -3 = -1/5 = -1/5

The lines AB and CD are perpendicular because they have opposite reciprocals and opposite signs.

26.)

Plug in EF slope is -3/5

1 - 4/ 3 - -2 = -3/5 = -3/5

Plug in GH slope is -3/5

-5 - -2/ 4 - -1 =  -3/5 = -3/5

The lines EF and GH are parallel lines because they have the same slopes.

Hope this helps ya!

Answer:

what the other person said

Step-by-step explanation:

you were already saved just give them brainliest now

Two companies rent moving trucks. Pack and Go charges a $39.95 flat fee, and $0.45 for every mile driven. U-Drive charges a $59.95 flat fee, and $0.35 for every mile driven. At how many miles is the cost of the truck rentals the same?

Answers

Answer:

The indifference point is 200 miles

Step-by-step explanation:

First, we need to establish the total cost formula for each company:

Pack and Go:

Total cost= 39.95 + 0.45x

x= miles driven

U-Drive:

Total cost= 59.95 + 0.35x

x= miles driven

Now, we equal both formulas and isolate x:

39.95 + 0.45x = 59.95 + 0.35x

0.1x = 20

x= 200 miles

The indifference point is 200 miles

Answer:

A is answer 1/ 39.95 + .45x = 59.95 + .35x

B is answer 3/ miles driven

C is 3 /200

Step-by-step explanation:

Got 100% on edge

What's 4/5 as a percentage?

Answers

Answer:

80%

Step-by-step explanation:

% is out of 100 so make the denominator of 4/5 to be 100:

4/5 times 20/20 = 80/100 = 80%

Answer:

80%

Step-by-step explanation:

4 divided by 5 equal .8

.8 x 100 equals 80

It's multiplied by 100 because usually percentages are out of 100.

OR

You can move the decimal in .8 to 2 space to the right

Eliot needs to replace a window that is in the shape of a
semicircle.
K 1.5 ft
>
What is the area of the window? Use 3.14 for 1. Round your
answer to the nearest hundredth of a square foot.

Answers

353.25

a=(3.14*15^2)/2

a=706.5/2

a=353 sq in

Please help me with this .

Answers

Answer:

x=4

Step-by-step explanation:

It's a parallel line so the equation is

100+19x+4=180

19x=180-100-4

19x=76

x=76/19

x=4

Answer: x = 4

Step-by-step explanation: The 2 angles are same-side interior angles, which are supplementary, and supplementary angles add up to 180, so we know that 19x + 4 = 80.

- 4. -4

19x = 76

/19. /19

X = 4

A grandparent deposits $3,000 each year into an annuity that pays 8% interest. Find
the future value at the end of 10 years.

Answers

4590 because I honk the teacher o

can yall help me or not?

Answers

Answer

desktop for 1st because it sold less computers and made more money.

for 2nd laptops 1.53 and computer 4.34

Step-by-step explanation:

Write an equation of the direct variation (the line has a y-intercept of (0,0)) that includes the point (3,18).
Desmos Graphing Calculator
Algebra I STAAR Formula Chart
Calculator
Y=12
y = -6x
y 63

Answers

Answer:

b

Step-by-step explanation:

find the equation of the line . PLEASE HELP

Answers

Y=1/2x-3............

Give the equation in slope intercept form for each representation. Tell me if you can’t see the pic at the top.

Answers

QUESTION 5:
M : -2.75
B : 1
equation : y = 2.75x + 1

QUESTION 6:
M : 1.3
B : -2
equation: y = 1.3x -2

QUESTION 7:
M : 0.5
B : 4
equation : y = 0.5x + 4

i couldn’t see 8 all the way but i hope this helped !! <3

Mr Mason asks 240 year 11 students what they want to do next year. 15% of the students want to go to college. ¾ of the students want to stay at school. The rest of the students do not know. Work out the number of students who do not know.

Answers

Answer:

Number of students who do not know = 24

Step-by-step explanation:

Year II students = 240

15% of the students want to go to college.

Number of year II students who wants to go to college = 15% of 240

= 15/100 × 240

= 0.15 × 240

= 36

¾ of the students want to stay at school.

Number of students who wants to stay at the school = 3/4 × 240

= (3 × 240) / 4

= 720 / 4

= 180

Number of students who do not know = Total year II students - Number of year II students who wants to go to college - Number of students who wants to stay at the school

= 240 - 36 - 180

= 24

Number of students who do not know = 24

AYYYYYYYYYYYYYYOOOOOOOOOOOOOOOOOOO
Get Ya free 25

Answers

Answer:

Ok

Step-by-step explanation:

Solve using the quadratic formula x^2-12x+5=0

Answers

Answer:

x=6+[tex]\sqrt{x}[/tex]31

pls answer both parts of this problem for a brainliest !!

Bianca can walk 5/6 of a mile in of an hour. What is her walking speed, in miles per hour?

Answers

Step-by-step explanation:

please see it, i work on paper worksheet

Answer:

2 1/2 miles

24 minutes per mile

please help ASAP!!!!!!

Answers

X=57
Explanation:
63+60=123
180-123=57
When 63 and 60 are added together, you will be able to find x. Subtracting 180 from the sum of 63 and 60 will find x.

what is 20r^2+11r-3=0 for all real solutions?
please answer fast

Answers

Answer:

r=0.2

r= -0.75

Step-by-step explanation:

if im wrong im sorry

I’ll mark you brainlist if you get the right answer please help!

Answers

Answer:

it would probably be 56

Step-by-step explanation:

what is the answer?​

Answers

Answer:

A S A

Step-by-step explanation:

In ΔACE & ΔBCD,

   ∠A ≅ ∠B      {Given}     Angle

  AC = BC           {Given}    Side

  ∠ACE = ∠BCD    { Reflexive property} Angle

ΔACE ≅ ΔBCD      ------>A S A Property

Solve the following quadratic by completing the square. (Hint: It won't factor) x2-10x+5=0

Answers

[tex]5+2\sqrt{5} , 5-2\sqrt{5}[/tex]    Answer:   5±2[tex]\sqrt{5}[/tex]

Step-by-step explanation:

x2 -10x=5=0

x2-10x+25=-5+25

(x-5)(x-5)=20

[tex](x-5)^{2} =\sqrt{20}[/tex]

[tex]\sqrt{x-5}=\sqrt{20}[/tex]

x-5=±[tex]\sqrt{20[/tex]

x=5±[tex]\sqrt{5*4[/tex]

x=5±2[tex]\sqrt{5}[/tex]

IS THIS A FUNCTION AND WHICH ONE?! VEIW PICTURE

Answers

Answer:

A and B are functions but C is not

Step-by-step explanation:

a  function has one y value to every x value.

this table shows a liner relationship. based on the information in this table. which equation can be used to model the relationship between x and y?
A) y =3x
B) y =85x
C) y = x + 3
D) y = 3x + 255​

Answers

I think it’s C have a great day

i think it is c if its wrong i apologize.

a sphere has a radius r=12 inches. What is it’s approximate volume

Answers

Answer: 7238.28

Step-by-step explanation:

Charles charges 4 an our to baby sit he also adds an extra 10 dollars onto the total for families with more than 3 children. How much will charles charge to baby sit 4 children for 4 hourss

Answers

14? i’m wrong but what everyone

Answer:

i beleve 26 or 48

good luck

Find the missing measurements.Use 3.14 for Pi. Round all the answers to the nearest hundreth

Answers

Answer:

R=5.0095

D=25.0955

Step-by-step explanation:

C=r^2(3.14)

C=d(3.14)

78.8/3.14=d

Square root diameter to get radius.

convert the word three and five tenths into a fraction

Answers

Your answer would be 3 5/10. (3 and 5/10).

uhmmmm... yea............ ​

Answers

Answer:

You add 12.5+12.5+3.02+3.02 which equals 31.04

Step-by-step explanation:

What is it will mark Brainliest

Answers

Answer:

1

Step-by-step explanation:

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