what is

x²−23=52−2x²
and
x²+7=6x

answer asap pls

Answers

Answer 1
3x^2 = 75
x^2 = 25
x = 5

use quadratic formula for second one

Related Questions

Jesse is filling spherical balloons. When full, one of these balloons has a diameter of 24. Jesse can fill a balloon at a rate of 820cm^3 per breath. how many breaths would it take her to fill a balloon

Answers

Answer:

it's 8.8 had to do the exact problem on khan acedemy

Step-by-step explanation:

answer is 8.8 breaths

Um determinado clube de futebol tem 2/3 dos pontos do líder da competição. Sabendo que o primeiro colocado tem 36 pontos, quantos pontos este clube está do líder?

12 pontos
24 pontos
36 pontos
6 pontos​

Answers

2/3 x 36 = 72/3 = 24

24 pontos

Which graph represents y = –4x + 4? HURRY PLEASE HELP!!

Answers

y=-4x+4
-4 is the gradient
So it goes downwards
+4 is the y intercept so where it crosses the y axis
Bottom right one

Only hash channel catfish typically was about 0.06 g during the first six weeks of life at weight increase about 10% each day right a exponential model for the weight how much will the catfish gain weight after six weeks

Answers

Answer:

3.225 gram

Step-by-step explanation:

Given that :

Initial weight = 0.06g

Rate of increase, r = 10% = 0.1 per day

Weight gain after 6 weeks

For an exponential model. f(x)

f(x) = a(1 + r)^x

Where ; a = initial amount ; r = growth rate ; x = period

Our model becomes :

f(x) : 0.06(1 + 0.1)^x

f(x) = 0.06(1.1)^x

Number of days in 6 weeks = 6*7 = 42 = x

f(42) : 0.06(1.1)^42

= 3.285 gram

Hence, weight gain after 6 weeks :

(3.285 - 0.06) g = 3.225 gram

Please help with number 1 and 4 asap!

Answers

Answer:

Total surface area

1) 46cm²

4) 304cm²

Step-by-step explanation:

1) First you need to work out each face on its own, opposites will be the same such as the front and back, top and bottom, side to side, because its a rectangle.

Formula : Base x height

Front/back : 5x3=15 and 15 =30 (added together)

top/bottom : 1x5= 5 and 5 = 10

side/side : 3x1= 3 and 3 = 6

30+10+6=46cm²

4) lets work out the easy ones first using the same formula from question 1 for one surface area but this is a trapezium, which is a irregular quadratical shape so the sides would most liky be different from each other except the front and back.

Top : 5x8=40

bottom : 3x10=30

right side : 12x8=96

Left side : 12x10=120

front/back= 12x3=36 / 2 = 18

Because if u added another side to make it a rectangle then divide by 2 would get the answer or 1/2 x base x height also works.

40+30+96+120+18=304cm²

please help...
thanks due in some hours

Answers

Answer:

1. x=4 y=4√3

2. x=48 y=24√3

4. x=7/√3 y= 14/√3

5. x=27√3 y = 54

Step-by-step explanation:

There's an attachment. This is due in TWO minutes! I will award brainliest. Please answer soon!

Answers

Answer:

ultiply by 2 and then add 2

Step-by-step explanation:

....hi

You deposite $1500 in an account that pays 7% annual interest compounded daily. Find the balance after 4 years

Answers

$1920

Step-by-step explanation:

princiiple (p) = $1500rate (r) = 7%time (t) = 4 yearsinterest = (p × r × t) ÷ 100 = (1500 × 7 × 4) ÷ 100 = 42000 ÷ 100 = $420

amount after 4 years = principle + interest = $1500 + $420 = $1920

MARK ME BRAINLIST

Help plz i tried 4 and it was wrong

Answers

Answer:

2 roots this parabola have because it line passes at x - axis.

6/13 as a decimal rounded to the nearest thousandth

Answers

Answer:

the answer will be  0.462

Step-by-step explanation:

PLEASE HELP I NEED MORE PLEASE WORTH 1O POINTS

Answers

hope it's helpful ❤❤❤❤❤

THANK YOU.

Answer:

6. is b

Step-by-step explanation:

How many 1/4’s are in 2/3?

Answers

Answer:

We'll leave 2/3 as it is and reciprocate 1/4 into 4/1. 2/3 × 4/1 = 8/3 which becomes 2.66. So 1/4 will go into 2/3 2.66 times.

Step-by-step explanation:

Answer:

1/4 is in 2/3 2 2/3 times

Step-by-step explanation:

What is a reasonable height for a 5-story building?
16 mm
16 km
16 cm
16 m

Answers

Answer:

16 km !

Step-by-step explanation:

all the others are FAR too small.. they wouldnt even be one story up ! and 16m  isnt 5 stories either... km would be right !

i hope this helps !!

Write down the Inequality for x that is shown in this line.

Answers

Answer:

[tex]x>3[/tex]

Step-by-step explanation:

Using the line shown here, we can see that the variable x can takes values greater than 3.

The white circle means that the x can not take this value.

Then, x could be 4, 5, 6, ... and so on.

Putting this information into an inequality form we will have:

[tex]x>3[/tex]

or in interval terms, all the values of x ∈ (3, infinity).

I hope it helps you!

Answer:

Step-by-step explanation:

I dont know

can someone please help with this? will give brainliest

Answers

Answer:

0.004

Step-by-step explanation:

Just mutiply and divide by 2

A number divided by —4 is —13. pls help<3

Answers

52 /(-4)= -13 so the answer is 52

Answer:

[tex]\frac{n}{-4} =-13: n = 52[/tex]

Step-by-step explanation:

[tex]\frac{n}{-4} =-13: n = 52[/tex]

An easy way to find out is by plugging the variable with a constant such as 2

Kyle completed 24 sit-ups which is 30% of his daily goal what is Kyle's daily sit-up goal?​

Answers

Answer:

80

Step-by-step explanation:

what is the nearest degree ?

Answers

Answer:

maybe 65 degrees

sorry if its wrong

Answer:

45 degrees

Step-by-step explanation:

All three angles equal 180

Its a right triangle, C=90

Two angle, 90 degrees left, and they're equivalent so divide by 2

B=45, A=45

Which set of ordered pairs represents a function?
{(-8, 1), (5. –7),(-6,9), (-6, -9)}
o{(-2,-3), (2, 1), (2,6), (4,9)}
o{(8,4), (6,4), (9,1),(7-6)}
o{(-4,5),(0,0), (2, -8), (2,0)}

Answers

Answer:

o{(8,4), (6,4), (9,1),(7-6)}

Step-by-step explanation:

Every x value can only have one y value

10 Points Please Help


What is the solution of this equation?

-3z = 24

Answers

Answer:

-8

Step-by-step explanation:

bc a negative time a negative give u a positive

-3x-8=24

need help asap please help

Answers

X is 28 degrees, have a womderful day

i need help please asap

Answers

Answer:

1

Step-by-step explanation:

If this answer helped you then please mark it as brainliest so I can get to the next rank

1
It is 1
Ok thank you

PLEASE HELP!!!! WILL GIVE BRAINLIEST!!!!!! <3

Answers

Answer: The numbers go from left to right on the table in this order: 0, 3, 4, 3, 0, -5.

To do the problem, you put the x - value in place of where the x is in the equation above (y = 4 - x^2) and then you put what y equals in the box after you finish.

Good luck, hope this helped!!

I NEED HELP EMERGENCY!!

Answers

Oh okie oh gosh lol lol oh okie so

Pick out the solution from the values given in the bracket next to each equation. Show that the other values do not satisfy the equation. a. X + 12 = 20 ( 12,8,20,0) b. P - 4 = 0 (4,-4,8,0) c. 2y - 3 = 7 (0,3,5,7) Plz explain ;)

Answers

Answer:

(a) 8

(b) 4

(c)5

Step-by-step explanation:

We are given multiple parts and we  need to provide the correct answer among the given options, also we need to prove that rest of the answers are wrong.

(a). X + 12 = 20 ( 12,8,20,0)

X= 20 -12

X= 8, so only 8 is the correct answer and rest are wrong.

Proof: lets take other given options into consideration

X= 12

X+12 =12+ 24 which is wrong because X+12 is already given as 20.

similarly,

X=20

X+12 = 20+12 = 36, which is wrong because X+12 is already given as 20.

X= 0

X+12 = 0+12 = 12, which is wrong because X+12 is already given as 20.  

(b). P - 4 = 0 (4,-4,8,0)

P-4 = 0

P= 4, So only 4 will give the correct answer and not the other options.

P= -4 = -4 -4 = -8, which is wrong because P-4 is is already given as 0.

similarly,

P = 8  = 8-4 = 4, which is wrong because P-4 is is already given as 0.

P = 0, 0-4 = -4 , which is wrong because P-4 is is already given as 0.  

(c). 2y - 3 = 7 (0,3,5,7)

       2y = 7 + 3

       2y = 10

          y = 5, only 5 will satisfy this given equation and rest will be wrong,

y = 0

2y-3 = 7

2(0) -  3 = 7

-3 = 7 which is not correct as LHS and RHS must be same.

similarly,

y = 3

2y-3=7

2(3) - 3 =7

6-3 = 7

3=7 which is again wrong.

y = 7

2(7) -3 =7

14-3 = 7

11=7, which is wrong.

Therefore the given options for the correct answers is verified and the wrong answers are given as the proof.

What is the slope of a line parallel to line A?

A. -4/7
B. -7/4
C. 4/7
D. 7/4

Answers

C. 4/7

Parallel lines have the same slope, so u must find the slope of line a
To find the slope you take two points and use the formula (y2-y1)/x2-x1
The two points given are (-7,0) and (0,4)
To figure it out fill in the formula with the points
Slope= 4-0/0-(-7)
=4/7

Answer:

The answer is C.4/7

Step-by-step explanation:

First of all, parallel lines have the same gradient (slope), so if you find the slope for line A this will be the same slope as the line parallel to it (line A).

Step 1: find any two points from line A.

point 1: (0,4)    Where, [tex]x_{1} =0[/tex]    and    [tex]y_{1}=4[/tex]

point2: (-7,0)    Where, [tex]x_{2} =-7[/tex]    and    [tex]y_{2} =0[/tex]

Step2: write the formula of the slope:

[tex]m=\frac{y_{2}-y_{1} }{x_{2} -x_{1} }[/tex]

Step3: substitute the numbers in the formula:

[tex]m=\frac{0-4}{-7-0}[/tex]

Step4: simplify the formula to get the answer to the slope:

[tex]m=\frac{-4}{-7}[/tex]

[tex]=\frac{4}{7}[/tex]

So the answer is:

C. 4/7

(note: this is the slope of line A and any line parallel to line A)

Two triangular pyramids have slant heights of 8 inches and 11 inches. What is the ratio of the surface area of the small pyramid to the surface area of the large pyramid?
Group of answer choices

Answers

Answer:8:11

Step-by-step explanation:if it’s a ratio it would be 8 to 11 but for the to it would be a ratio operation and equals :

Please Help!!! (i'll give the best answer brainliest)

Answers

False that what it is your welcome
Pretty sure it’s false but not 100% about it

Write as an algebraic expression.
1. the sum of m and 8



Answers

Answer: m+8 =

Step-by-step explanation:

Andy is buying a car
he negotiated a 7% decrease on a £6 500 car
he will pay the full balance in 12 equal month payments
calculate the amount paid each month

Answers

Answer:

£503.75 per month

Step-by-step explanation:

7% decrease on a £6,500 car

= 7% of 6,500

= 7/100 * 6,500

= 0.07 * 6500

= £455

Amount of the car = £6,500 - £455

= £6,045

he will pay the full balance in 12 equal month payments

Amount paid each month = £6,045/12 months

= £503.75 per month

Answer:

7% decrease on a £6,500 car

= 7% of 6,500

= 7/100 * 6,500

= 0.07 * 6500

= £455

Amount of the car = £6,500 - £455

= £6,045

he will pay the full balance in 12 equal month payments

Amount paid each month = £6,045/12 months

= £503.75 per month

Step-by-step explanation:

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