Mathematics High School

If the system x+y=5, 5x+by=19 has a solution represented by the ordered pair (-1,6) then the value B is

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Answer 1

Answer:

Step-by-step explanation:

the awnser is 40

Related Questions

How many zero dimensional objects are labeled on the object shown above?

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Answer:

Step-by-step explanation:

0-dimensional objects are points

hii can someone please help me on this problem?

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Answer:

Please write the problem

Step-by-step explanation:

So i can help you :)

no links
Suppose that the probability that your
mail is delivered before 2 pm is .90.
What is the probability that your
mail
will be delivered before 2 pm for two
consecutive days? Give your answer as
a decimal.

Answers

Answer:

The probability is 0.81

Step-by-step explanation:

The probability we want to find here is that;

the mail was delivered before 2 pm the first day and also delivered before 2 pm the next day

what we have to do here is to

multiply together, the probability in the two cases (for both days)

So we have this as:

0.9 * 0.9 = 0.81

Answer:

.81

Step-by-step explanation:

a standard number cube is tossed. find the following probability. P(less than 3 or even)

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Answer:

half

Step-by-step explanation:

(this is 12 year old math)

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Answer:

orange

yellow

Step-by-step explanation:

what does 45=-3x tell me

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Answer: x = -15

Hope this helps :)

Answer:

x = -15

Step-by-step explanation:

[One step multiplication problem]

When solving a one-step multiplication problem the easiest thing to do would be to divide the 'answer' (in this case, 45) by the coefficient (in this case, -3). A negative number times a negative number is a positive number, so x would be a negative number. 45 divided by -3 is -15.

So, x = 15.

Hope this helped!! <3

3 х 3x3x3x3
Index notation

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3 to the power of 5 i think

half the product of a and 2?
?????????????????????????????????????????????????????????????????????????????????????????????????????????

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Answer:

Step-by-step explanation:

If you multiply a by 2, then divide it by 2, then it would equal a.

Hope that this helps!

Answer:

2a is answer

hope this will help

Factorise fully
-X – 10

Pls help

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Answer:

-X – 10=-1(x+10) is your answer

HELP!!!!

What is the total surface area of the figure?

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Answer:

200cm

Step-by-step explanation:

find the value of x. 49° x°

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Answer:

x = 41

Step-by-step explanation:

All triangle angles add up to 180 so:

x + 90 + 49 = 180

x + 139 = 180

x = 180 - 139

x = 41

A company prints 22,875 tickets for a stadium. The tickets are placed into groups of 125. How many groups of tickets are made?

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22,875 divided by 125= 183
There are 183 groups

Please answer asap with explanation

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Answer:

x^2 = 44y

It's really hard to explain

but if the directrix is y then your problem will have X^2= if it was x then the problem would have y^2=

then you have to have the y on the other side of the equation

and you want to multiply the 11 by 4. always multiply by 4.

this is a good video to understand it go to You.Tube and type

Learn to graph a horizontal parabola & identify the focus & directrix

I need helpppppp please !!!!!

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Answer:

Step-by-step explanation:

I don't know if my answer is sorry if it is i think its B

Can someone pleaseeee help and if you’re correct i’ll give brainliest

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Answer:

Rows: 3+3+3+3=12

Columns: 4+4+4=12

please help me surface area!!

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Answer:

888

Step-by-step explanation:

SA=2xLxW+2xLxH+2xWxH

Amanda's age is one-half of Sally's.

Which variable expression represents Amanda's age?

s + 2

12+s

s2

2s
Plz help will give brainilist

Answers

Answer:

2s or s2

Step-by-step explanation:

2s and s2 are the same but it's one of them. I hope this helps!

What is the surface area of the cylinder shown below? Use 3.14 for π. A. 660 cm2 B. 863 cm2 C. 353.25 cm2 D. 785 cm2

Answers

Answer:

602.88cm²

Step-by-step explanation:

Find the image of the cylinder attached

Surface area of a cylinder = A=2πrh+2πr²

r is the radius = 4cm

Height h = 20cm

Substitute

A = 2πr(r+h)

A = 2π(4)(4+20)

A = 8π(24)

A = 192π

A = 192(3.14)

A = 602.88cm²

Hence the surface area of the cylinder is 602.88cm²

Select the correct answer.
If the graph of f(x) = 9^x is shifted 7 units down, then what would be the equation of the new graph?

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Answer: g(x)=9^x-7

Step-by-step explanation:

what percent is 300 of 1l

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Answer:

30%

Step-by-step explanation:

1L = 1000ml

--------------------

100%-> 1000

1%-> 10

300 ÷ 10 = 30%

PLS ANSWER I WILL MAKE YOU BRAINLIEST

A surveyor is standing 118 feet from the base of the Washington Monument. The surveyor measures the angle of elevation from the ground to the top of the monument to be 78°.
Find the height h of the Washington Monument to the nearest foot.

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Answer:

555.1 ft

Step-by-step explanation:

George says that 4+ a +a+a+b+b=24ab
Describe the mistakes George has made.
Give the correct answer.

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Answer:

3a+2b+4

Step-by-step explanation:

24ab indicates that there is 24 of unit ab which there is not. there is 4+ 3a+2b

Please help!!!!!!!!! I'll mark brainliest if you give an explanation!!!!
Each solar array wing on the International Space Station measures 39 feet by 112 feet. The scale drawing of a solar array wing shown below was made using a scale of 1 inch: 8 feet.
Write the ratio of the area of the wing in the drawing (square inches) to the area of an actual solar array wing (square feet) as a unit fraction.
The drawing is just a large rectangle with the length being 4.875 and there is noting for the width.

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Answer:

39-112= -73 or 73

so 73+1/8= 81

Step-by-step explanation:

99-7a^2 when a =3 please help!!!!!!!!!

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Answer:

99-7a^2=36 when a =3

Step-by-step explanation:

99-7a²

99-7(3)²

99-7(9)

99-63

Two angles are complementary. The first angle is 2x degrees. The second angle is (3x +5) degrees. Determine the measure of each angle.

Draw the angles, write and equation and solve the measures of each angle.

HELP PLEASE

Answers

Answer:

70 and 110

Step-by-step explanation:

First angle -- 2x

Second angle -- 3x + 5

Therefore,

2x + 3x + 5 = 180

5x = 175

x = 35

Therefore, 2x -- 70

3x + 5 -------------110

Thenks and mark me brainliest :)

A horizontal force of 20.8 N is applied to move a 425-kg cart a distance 0.636 m
what is applied to the cart?

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A work applied on the cart = 20.8x0.636

PLEASEEEEEEEEEEEEE SAVE MEEEEEEEEEEEEEEEEEEEEEEEEE

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Answer:

I think the answer is not proportional for B I'm sorry if it is wrong

Step-by-step explanation:

Answer:

a) not directly proportional

b) yes, k = -3/8

Can somebody help me with this pleaseee!!! Help will be very appreciated And may you explain why it’s a lie .

Answers

Answer:

my mother say it is B. she is good at math

Answer: A

Step-by-step explanation:

Answer A is a lie. The most obvious reason being the other two statements can be proven because the y intercept of the exponential IS (0, 1). Secondly, the point (-2, 4) CAN be found on the graph. Option A is the lie because if you look, for x = 10, y = 0. Therefore, the statement that for very large values of x the exponential has very large values of y, is a lie.

Please help me asap!!

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I believe the answer is C

Simplify the following fractions to their lowest possible form using the Greatest Common Factor

Answers

Answer:

13) 3/6 = 1/2

14) 4/8 = 1/2

15) 6/30 = 1/5

Step-by-step explanation:

GCF OF 3/6 = 3, SO 3/6 = 1/2

GCF OF 4/8 = 4, SO 4/8 = 1/2

GCF OF 6, 30 = 6, SO 6/30 = 1/5

Hope that helps! :)

-Aphrodite

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