Mathematics High School

plz answer. Its urgent. thanks​

Plz Answer. Its Urgent. Thanks

Answers

Answer 1

Answer:

[tex] a = \dfrac{5}{18} [/tex]

[tex]b = -\dfrac{1}{18}[/tex]

Step-by-step explanation:

You need to rationalize the fraction.

[tex] \dfrac{1}{5 + \sqrt{7}} = a + b\sqrt{7} [/tex]

[tex] \dfrac{1}{5 + \sqrt{7}} \times \dfrac{5 - \sqrt{7}}{5 - \sqrt{7}} = a + b\sqrt{7} [/tex]

[tex] \dfrac{5 - \sqrt{7}}{25 - 7} = a + b\sqrt{7} [/tex]

[tex] \dfrac{5 - \sqrt{7}}{18} = a + b\sqrt{7} [/tex]

[tex] \dfrac{5}{18} - \dfrac{1}{18}\sqrt{7} = a + b\sqrt{7} [/tex]

[tex] a = \dfrac{5}{18} [/tex]

[tex]b = -\dfrac{1}{18}[/tex]

Related Questions

Which of the following is an example of polynomial function?​

Answers

Answer:

it's not showings the "following" part

Plzzzz help me plzzz help

Answers

Answer:

D

Step-by-step explanation:

Answer:

ITS D

Step-by-step explanation:

A monomial only has one number. Mono meaning 1.

What is the area of the figure?
Enter your answer in the box.
in2

Answers

110^in2 is what I got

D. car B was 5 miles east of car A

Answers

Answer:

Was 5 miles east oft car A

VERY DIFFICULT!! HELP NEEDED

Answers

Answer:

4 dogs....hope it helps u

Write 543 000 in standard form.

Answers

Kwjwhh22u na pewno to pewno jest to dla mnie nich jest to bardzo dla dzieci nas nie na temat i

Evaluate the function f(x)=2x-7 using the values given below. f(-3)=

Answers

Answer:

-13

Step-by-step explanation:

f(x)=2x-7

f(-3)=2(-3)-7=-6-7=-13

Write the equation of a parabola in factored form if the x-intercepts are (3,0) and (-5,0) with a maximum point at ( -1,8)

Answers

Answer:

y = - [tex]\frac{1}{2}[/tex] (x - 3)(x + 5)

Step-by-step explanation:

Given the x- intercepts are x = 3 and x = - 5 then the corresponding factors are

(x - 3) and (x + 5)

The equation is the the product of the factors, that is

y = a(x - 3)(x + 5)  ← a is a multiplier

To find a substitute (- 1, 8) into the equation

8 = a(- 1 - 3)(- 1 + 5) = a(- 4)(4) = - 16a ( divide both sides by - 16 )

- [tex]\frac{1}{2}[/tex] = a

Then

y = - [tex]\frac{1}{2}[/tex] (x - 3)(x + 5) ← in factored form

agree or desagree ? ​

Answers

Answer:

agree

Step-by-step explanation:

Agreeeeee

Step by step explanation

may the real slim shady please stand I repeat may the real slim shady please stand up

Answers

Answer:

lol

Step-by-step explanation:

We're gonna have a problem here

Y'all act like you never seen a white person before

Jaws all on the floor like Pam like Tommy just burst in the door

I’m going to sit RIGHT back down

Find the missing angle?​

Answers

Answer:

90 degrees

Step-by-step explanation:

the answer to this problem is 90

Elaina charged $83 on her credit card to buy groceries. If the
balance is now $294, what was the balance before she bought
groceries?

Answers

Answer:

211?

Step-by-step explanation:

I'm not sure if this is correct, but:

294-83=211.

Hope this helps! :)

The balance before she bought the groceries was $277.

What are mathematical operations?In mathematics, an operation is a function which takes zero or more input values (also called "operands" or "arguments") to a well-defined output value.There are five fundamental operations in mathematics: addition, subtraction, multiplication, division, and modular forms

Given is that Elaina charged $83 on her credit card to buy groceries. The balance is now $294.

The balance before she bought the groceries is -

294 + 83

277

Therefore, the balance before she bought the groceries was $277.

To solve more questions on addition, visit the link below -

https://brainly.com/question/29207465

#SPJ2

       

Pls...I have no idea what the answer is :(

Answers

Wait a minute figuring it out

kwasi thought of a number, multiplied it by7/2 and added 16 to the results.if the final answer was 30.what number did he think of​

Answers

Answer:

4

Step-by-step explanation:

represent the number he thought of with x

[tex] \frac{7}{2} x + 16 = 30[/tex]

multiply through with the LCM which is 2[tex]2 \times \frac{7}{2}x + 16 \times 2 = 30 \times 2 [/tex][tex]7x + 32 = 60 [/tex][tex]7x = 60 - 32[/tex][tex]7x = 28[/tex][tex] \frac{7x}{7} = \frac{28}{7} [/tex][tex]x = 4[/tex]

Which statement not true

Answers

I'm not sure because There isn't attached

Plz Help! I don't know how to solve this.

The measures of two angles of a triangle are given. Find the measure of the third angle.
147° 12′, 30° 19′
51° 20′ 14″, 106° 10′ 12″

Example: Applying the Angle Sum of a Triangle Property
The measures of two of the angles of a triangle are 48° and 61°. See Figure 17.
Find the measure of the third angle, x.
SOLUTION 48° + 61° + x = 180° The sum of the angles is 180°.
109° + x = 180° Add.
x = 71° Subtract 109°.
The third angle of the triangle measures 71°.

Answers

Answer:

Ummm I think the question is wrong, I don't fully understand.

How many times bigger is 315 compared to 312?



Do not include units (times bigger) in your answer.

Answers

Answer:

105/104

Step-by-step explanation:

you divide 315 divided by 312 and you get 105/104.

to check it you do 312 times 105/104 and you get 315 to be your answer! Hope this helps ;)

105/104 times the number 315 bigger than the number 312.

What is multiplication?

Multiplication is an operation that represents the basic idea of repeated addition of the same number. The numbers that are multiplied are called the factors and the result that is obtained after the multiplication of two or more numbers is known as the product of those numbers.

The given numbers are 315 and 312.

Number of times 315 is bigger compared to 312 is

315/312

= 105/104

Hence, 105/104 times the number 315 bigger than the number 312.

Learn more about the multiplication here:

https://brainly.com/question/1562995.

#SPJ3

Answer----=X
I dont know the process​

Answers

answer = x

Step-by-step explanation:

x over 2 + x over 2

(x+x)/2 = (2x)/2

0 = (2x)/2

move 2 beside 0

2 = 2x

move 2 to left

when 2 in right side is positive, if it moves to left it will be negative, then it will be,

2-2 = x

= x #

simplify this please (45)(26)

Answers

Answer:

1170

Step-by-step explanation:

45 times 26

Answer:

1170

45x26=1170

The seventh grade class supplied bags of snacks and beverages for the school dance. They supplied 50 more beverages than bags of snacks. The dance was supplied with a total of 400 items. How many of each were supplied.
a) Define the variable(s)
b) Write a system of equations for the situation.

Answers

Answer: 14 bags of snacks.

https://brainly.com/question/14053925

For 30 points pls help me!

Answers

Answer:

6.A

7.C

8.E

Step-by-step explanation:

2. What are the zeroes of P(x) = x3 – 6x2 – x +62
-6, -1, 1
A.
C. 6, -1, 1
B. -6, -1, -1
D. 6, 1, 1​

Answers

Step-by-step explanation:

if u mean (x^3 -6x^2 -x- 6) then the answer is C

(6,-1,1)

..................,..........

but if u mean P(x) = x3 – 6x2 – x +62

then the answer is None of the above

-2.724

4.361+1.9328i

4.361+1.9328i

If the m angle 5 is 63 , find the measure of angle 3.

Answers

Answer:

Hey this isn’t the answer, sorry

Step-by-step explanation:

I just need this answer to so let me know if you get the answer Thank you

Answer:answer is 117

Step-by-step explanation:

N/A

You roll a number cube. What are the odds of getting a six.

Answers

The odds should be 1/6 because there are 6 sides and the goal is to get one of those 6 numbers

Please solve the quadratic equation in 4 steps

x^2-14x+49=5

Answers

Answer:

=7±5√

Step-by-step explanation:

is easy and no hard

HELP PLEASE
/8th grade mathhhh

Answers

Answer:

The answer is 56

Step-by-step explanation:

180-124=56

The diameter of a circle is 4 m. Find its area to the nearest tenth.

Answers

Answer:

12.6m²

Step-by-step explanation:

radius=2

Area=π2²=12.6(1dp)

The guy above is right but didn’t round it off. It’s 13 instead of 12.6

Select ALL the side lengths that make a right triangle. *
3,6,7
1,2,4
3,4,5
5,9,10

Answers

3,4,5 is correct

as we know that ,

3² + 4² = 5²

9 + 16 = 5²

25 = 25

hence . 3,4,5 is correct

Answer:

I'm pretty sure it's 3,4,5 but I'm not sure (is it in cm,mm etc?)

okay so the problem is "A circle is centered at the point (-3,2) and passes through the point (1,5). The radius of the circle is ( ) units. the point (-7, ) lies kn this circle. I'm not sure how to find the answer.​

Answers

Answer:

A circle is centered at the point (-3,2) and passes through the point (1,5). The radius of the circle is (5 ) units. the point (-7, -1) and point (-7, 5) lies in this circle.

Step-by-step explanation:

equation of circle is

(X-center_X)^2 + (y-center_Y)^2 = r^2

==> (x+3)^2 + (y-2)^2 = r^2

Now it passes 1,5 so

4^2+3^2 = 5^2

==> r = 5

when x = -7

y = -1 or 5

David has 1,327.00 on his checking account. if he writes a check for 1,987.00, what will David's balance be​

Answers

The answer is negative 660    (-660)

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