Please can someone answer this question, I never understand these and would like to know how to do them... QUESTION ATTACHED

Please Can Someone Answer This Question, I Never Understand These And Would Like To Know How To Do Them...

Answers

Answer 1

Answer:

sqrt (2) * sqrt(45) + sqrt (2) * sqrt (80)

45 = 9 *5 "9" is a perfect square so

sqrt (45) = 3 * sqrt (5) * sqrt (2)

sqrt (2) * sqrt (80)

80 = 16 * 5  "16" is a perfect square so

sqrt (2) * sqrt (80) = sqrt (2) * 4 * sqrt(5)

Adding both answers we get

3 * sqrt (5) * sqrt (2) = 3 * sqrt(10)

PLUS

4 * sqrt (10)

which equals

7 * sqrt (10)

SO, the value of a is 7

Step-by-step explanation:


Related Questions

HELP ASAP WILL GIVE BRAINLIEST!! Write the equation in point-slope form for the line that contains the points
(-2,-3).(4.3)

Answers

Using y=mx+b

Slope-intercept form:

y=x-1

Point-slope form:

Y+3=1(x+2)

here are 4 red cards and 8 black cards in a bag. How likely is it that you will randomly draw a blue card?

a
Impossible
b
Unlikely
c
As likely as not
d
Likely
e
Certain

Answers

Answer:

I would say B?

Step-by-step explanation:

Hope this helps (:

A impossible because nowhere does it say there are any blue cards in the bag

Quadrilateral GHIJ has coordinates G(5, 1), H(4, -3), I(6, -1), and J(2, 1). If the quadrilateral is reflected over the line y = -x, what are the coordinates of G'?​

Answers

Answer:

Where is the diagram

Step-by-step explanation:

What is the area of the parallelogram?

Answers

The area is aprox 24.6

The sum 9 of and x
??

Answers

x + 9 is your answer!



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Solve for p:

-9 + p < 15

Answers

Answer:

p < 24

Step-by-step explanation:

Given: -9 + p < 15

Add 9 to both sides.

p < 24

Work out the cheapest way to buy 48 cans of cola

Answers

Answer:

Where is the image? I did something like this so if you are looking for that answer they are both the first one.

If the midpoints of the sides of triangle EFG shown below were connected
with line segments, what would be the perimeter of the resulting triangle?

Answers

Answer:

Choice 1) 181.5 mm

Step-by-step explanation:

41.5+55+85 = 181.5

A train travels 1 kilometre in 1 minute 20 seconds. Picture of steam train Question prompt At this rate, how many kilometres will the train travel in 1 hour?

Answers

Answer:

45km

Step-by-step explanation:

Distance covered in 1min 20sec (80sec) = 1km

Distance covered in 1 min (60sec) = 1km/80sec

Distance covered in 1Hr (3600sec) = (1/80)*3600 = 45km.

a. 150km in 10 hours. How far will be travelled
in 7 hours?

Answers

Answer:

Your answer is 105km travelled in 7 hours.

Step-by-step explanation:

Divide 150km by 10 to find the amount of km travelled in 1 hour. Then multiply that answer by 7.

What is the slope of y=-4​

Answers

Answer:

Zero

Step-by-step explanation:

Any equation that is y = a number, you have a horizontal line, with a zero slope, think of HOY, H(orizontal) O=zero Y=#

Find the value of x for brainlieat

Answers

Answer:

I can automatically eliminate B and D because those values are two high. My guess is C 6.2.

Step-by-step explanation:

Need help on 10 and number 11

Answers

Answer:

Here are six common ones. Lack of sleep. Not getting enough sleep is perhaps the greatest unappreciated cause of forgetfulness. Too little restful sleep can also lead to mood changes and anxiety, which in turn contribute to problems with memory.Apr 18, 2020

Step-by-step explanation:

Here are six common ones. Lack of sleep. Not getting enough sleep is perhaps the greatest unappreciated cause of forgetfulness. Too little restful sleep can also lead to mood changes and anxiety, which in turn contribute to problems with memory.Apr 18, 2020

Here are six common ones. Lack of sleep. Not getting enough sleep is perhaps the greatest unappreciated cause of forgetfulness. Too little restful sleep can also lead to mood changes and anxiety, which in turn contribute to problems with memory.Apr 18, 2020

Find the value of x.

Answers

Answer:

Step-by-step explanation: he standard form to find the value of X in multiplication operation is. Divisor × Dividend = Product. Let us take dividend = x, Divisor × x = Product. Then the formula to find the value of x is. X = product / Divisor

Answer:

x = 99

Step-by-step explanation:

4 sided polygon = 360 degrees

92 + 68 + 101 + x = 360

261 + x = 360

-261        -261

x = 99

Hope this helped! Have a nice day! Plz mark as brainliest!!!

-XxDeathshotxX

Tell whether the angles are adjacent or vertical. Then find the value of x.

Answers

Answer:

Adjacent angles. x = 55

Step-by-step explanation:

Adjacent angles are angles that are right next to each other, sharing one side.

Since that is a right angle (90º):

X + 35 = 90

X + (35-35) = 90 - 35

X = 55

Hope this helps! Have a great day!

Answer:

Adjacent, X= 55

Step-by-step explanation:

90-35= 55

Brian invests £1850 into his bank account. He receives 2.7% per year simple interest. How much will Brian have after 3 years? Give your answer to the nearest penny where appropriate.

Answers

Answer:

£1999.85

Step-by-step explanation:

A = P(1 + rt)

Where:

A = Amount after t years

P = Initial amount invested = £1850

r = Interest rate = 2.7%

t = Time in years = 3 years

Calculation:

First, converting R percent to r a decimal

r = R/100 = 2.7%/100 = 0.027 per year.

Solving our equation:

A = £1850(1 + (0.027 × 3))

A = £1999.85

Therefore, Brian will have £1999.85 after 3 years.

(-4x - 7.5 = 3312.5) + (4x + 4y = 2000)

(please im in a test rn)

Answers

Answer:

y= 1330

Step-by-step explanation:

it might be wrong but

-4x -7.5 = 3312.5

4x +4y = 2000      (x cancels out)

4y -7.5 = 5312.5

4y = 5320

y= 1330

COLOR THEME Q ZOOM 1. The ratio of boys to girls at a dance was 9 to 5. How many girls were at the dance if there were 72 boys at the dance? 45 girls 90 girls 40 girls 108 girls​

Answers

Answer:

72 boys=72:40

45 girls=81:45

90 girls=162:90

40 girls=72:40

etc.

Step-by-step explanation:

think of it as fractions

someone please answer asap ​

Answers

Answer:it will be B

Step-by-step explanation:

Answer:

the value of h ( or height ) is 4. Im not sure what other info is needed because of how the picture was cropped

which of the following is the square of (a + b + c)?

help.​

Answers

Answer:

a^2 + b^2 + c^2 + 2ab + 2bc + 2ca

True or False? The midpoint of a segment
is the point at which the perpendicular
Bisector intersects a segment.

Answers

Answer:

false

hope it helps

the line that bisect the segment is not always perpendicular

Answer:

True ig

Step-by-step explanation:

The name given to the point at which the perpendicular bisector interesects a segment is called the  '  midpoint of a segment "  

I hope im right!!

Help me with this!! I will mark Brainliest!!!

Answers

Answer:

1...-

Step-by-step explanation:

Given that 2 x − 2 y = 23 Find x when y = 9 Give your answer as an improper fraction in its simplest form

Answers

Answer:

41/2

Step-by-step explanation:

2x - 2(9) = 23

2x - 18 = 23

    +18   +18

2x = 41

/2    /2

x = 41/2

Help me, not sure how to solve this, my teacher didn't teach us yet, and I want a solid understanding of it, so the answer will be great! Also will give the most brainliest!

Answers

x = 15°--------------------------

Step-by-step explanation:

10 + 5x = 10 + 5(15)

= 10 + 75

= 85°

4x - 10 = 4(15) - 10

= 60 - 10

= 50°

6x - 5 = 6(15) - 5

= 90 - 5

= 85°

-------------------------FOLLOW ME

Solve the linear equation 5(8x+2) -64=2(8x9) Find X

Answers

Bla bla bla your answer is x=4.95

find the length of the bold arc. Round your answer to the nearest tenth.

Answers

Answer:

The length of the bold arc is approximately 13.4 mi

Step-by-step explanation:

The radius of the circle having the arc, r = 17 mi

Therefore, the circumference of the circle, 'C', is given as follows;

C = 2·π·r

∴ C = 2×π×17 = 34·π

The angle subtended by the arc = 45°

The sum of the angles at the center of the circle = 360°

By similarity, the ratio of the length of the bold arc to the circumference of the circle = The ratio of the angle subtended by the arc to the sum of the angles at the center of the circle

Mathematically, we have;

[tex]\dfrac{The \ arc \ length}{C} = \dfrac{\theta}{360^{\circ}}[/tex]

Therefore, we get;

[tex]\dfrac{The \ arc \ length}{34 \cdot \pi} = \dfrac{45 ^{\circ}}{360 ^{\circ}} = \dfrac{1}{8}[/tex]

[tex]{The \ arc \ length}{} = \dfrac{1}{8} \times 34 \cdot \pi = 4.25 \cdot \pi[/tex]

The length of the bold arc = 4.25·π mi ≈ 13.4 mi (by rounding off the answer to the nearest tenth).

A bag contains 3 red marbles, 7 blue marbles and 8 green marbles. If three marbles are drawn out of the bag, what is the exact probability that all three marbles drawn will be green?​

Answers

Answer:

4/9

Step-by-step explanation:

8/18 x 7/17 x 6/16 = 336/4896 = 0.06863 = 6.863% = 6.9\%

≈0.06863=6.863%≈6.9%

im giving out my points to the one who answers ! :)

Answers

Answer:

thank you so much

Step-by-step explanation:

have a great day

Answer:

hehehehehehehehehehehehehehehehe

What would you multiply by to decrease a number by 8%

Answers

Answer:

0.92

Step-by-step explanation:

take the 8 away from 100 = 92

then divide the 92 by 100

then you have your answer 0.92

The answer is 0.92 hope that helps


Using the graph, determine the coordinates of the roots of the parabola

Answers

Answer:

two points

Step-by-step explanation:

x intercepts

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