Mathematics High School

If –2 and –5 are the roots of the equation ax + bx + 20 = 0, find the values of a and b.​

Answers

Answer 1

Answer:

a=2

b=14

Step-by-step explanation:

If 2 And 5 Are The Roots Of The Equation Ax + Bx + 20 = 0, Find The Values Of A And B.
Answer 2

Step-by-step explanation:

a=2b=14.................

Related Questions

Mildred has a bag of coins. The bag contains 10 dimes, 5 nickels, and 1 penny. She will randomly select 2 coins from the bag one at a time without replacement. What is the probability that Mildred will select a dime first and then a penny?

Answers

Answer:

Total possibilities = 16

Probability of a dime of the first draw is 10/16 = 5/8

Probability of a penny on the second draw = 1/15

Probability of both = 5/8 * 1/15 = 1/24

If light travels 6.71x10 exponent 8 miles in one hour how many miles will it travel in 1 minute

Answers

Answer:

1.118 3 ¯ repeating   ⋅ 10 exponent  7

Step-by-step explanation:

please help need done before 2

Answers

Answer:

130.25ft

Step-by-step explanation:

a^2+b^2=c^2

5.5^2+10^2=

30.25+100=

help me due tomorrow at 4

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4 for the first one and 1.5 for the second one

can someone help? (look at image)

Answers

Answer:

n (-3,0) m (-4,4) l (0,3)

Step-by-step explanation:

I have bad eyesight but I think this is correct

What is the product of all constants $k$ such that the quadratic $x^2 + kx +15$ can be factored in the form $(x+a)(x+b)$, where $a$ and $b$ are integers?

Answers

YOU LITERIALLY ASKED THIS 7 TIMES ARE YOU OK?

is this still a problem you have?

if so ill solve it in one of the many other exact same threads.

amanda had to pay sales tax on a new iphone case she purchased last week. The iphone case was 35.00 and she pid 2.45 in taxes, what percent of the original price did she pay in taxes?

HELP

Answers

Answer:

7%

Step-by-step explanation:

[tex]\frac{2.45}{35} = \frac{x}{100}[/tex]

[tex]2.45*100[/tex] and [tex]35x[/tex]

[tex]\frac{245}{35} = \frac{35x}{35}[/tex]

[tex]245/35=7[/tex]

What is a rate? I will mark Brainiest

Answers

Answer:

A rate is a special ratio in which the two terms are in different units. For example, if a 12-ounce can of corn costs 69¢, the rate is 69¢ for 12 ounces. ... When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates.

Step-by-step explanation:

The second angle of a triangle is 3 times as large as the first angle. The third angle is 30 degrees more than the first angle. Find the measure of the angles.

Answers

Answer:

30-60-90 degrees

Step-by-step explanation:

1st angle:  x

2nd angle:  3x

3rd angle:  x+30

Sum of all angles must be 180 degrees

x + 3x + x + 30 = 180

5x + 30 = 180

5x = 150

x = 30

Calculate the value of y

Answers

157 degrees ... set 4x-5 = x+16 then solve, you should get x=7, plug in 7 for one of the equations and you'll get 23. subtract 23 from 180 and get 157. hope that helped :)

Answer:

157°

Step-by-step explanation:

(4x - 5)° = (x + 16)°.. (vertical angles)

4x - 5 = x + 16

4x - x = 16 + 5

3x = 21

x = 21/3

x = 7

(x + 16)° + y ° = 180°...(Linear pair angles)

(7 + 16)° + y° = 180°

23° + y° = 180°

y° = 180° - 23°

y° = 157°

what are the angle measurements of the triangle??

Answers

180 degrees! It’s equal to all sides and has the supplementary measure


[tex]y > 3x + 9 y < 3x - 1[/tex]
please help is it infinite number of solutions, or no solution
​

Answers

Answer:

no solution

Step-by-step explanation:

Consider a function f(x) such that f(5x) =x-5/5x-1. Find f(x) and hence write down the domain of f(x).
​

Answers

Answer:

[tex]f(x) = \frac{x - 25}{5x - 5}[/tex]

Domain: [tex]x \ne 1[/tex]

Step-by-step explanation:

Given

[tex]f(5x) = \frac{x - 5}{5x - 1}[/tex]

Required

Determine f(x) and its domain

To determine f(x), we replace 5x with x in f(5x)

So, we have:

[tex]f(5x) = \frac{\frac{5x}{5} - 5}{5x - 1}[/tex]

[tex]f(x) = \frac{\frac{x}{5} - 5}{x - 1}[/tex]

Take LCM

[tex]f(x) = \frac{\frac{x - 25}{5}}{x - 1}[/tex]

[tex]f(x) = \frac{x - 25}{5} * \frac{1}{x-1}[/tex]

[tex]f(x) = \frac{x - 25}{5x - 5}[/tex]

To get the domain, we set the denominator as

[tex]5x - 5 \ne 0[/tex]

[tex]5x \ne 5[/tex]

[tex]x \ne 1[/tex]

6 x - 2 (x - 5) = 22

Answers

Answer:

x = 2.75

Step-by-step explanation:

6x - 2 (x - 5) = 22

6x -2x + 10 = 22

4x + 10 = 22

     - 10    - 10

4x = 11

11/4 = 2.75

x = 2.75

Let me know if you need any more help!

I need help with this homework

Answers

x 0 1 2 3 4 5
y -1 1 3 5 7 9

Hope this helps

2 lines intersect to form angles 1 and 2.
Which equation represents the relationship between their measures?

mAngle1 + mAngle2 = 90°
mAngle1 + mAngle2 = 100°
mAngle1 + mAngle2 = 180°
mAngle1 + mAngle2 = 200°

Answers

Answer:

mAngle1 + mAngle2 = 180°

Step-by-step explanation:

This is the answer hope it helps

if u had a picture i could give further details

Hope this helped

Answer:

What if I told you I guessed

Step-by-step explanation:

but submitted and got it correct

...

its C:)

please help me, this isn't a test or quiz I just need some help.

​

Answers

the right is answer is B) alternate exterior

4) Karen Waughtal invested some money at 5% annual simple interest
and $500 more than that amount at 8% annual simple interest. If her total
yearly interest was $300, how much was invested at each rate?

Answers

Answer:

15000

Step-by-step explanation:

Brainlest if correct

Answers

I believe that the answer is B

is this table a function? why or why not?

Answers

no because each time it goes up by (1) and in the last one it goes up (2 times) and then decreases (4 times) on the right.

2. What is the equation of the line that passes through the points (4,5) and
(8,3)?

Answers

Answer:

y = -1/2x + 7

Step-by-step explanation:

The slope is -1/2.

The y intercept is 7.

Plugging them into the format for the equation we have:

y = mx + b

(m = slope and b = y intercept)

y = -1/2x + 7

please help! which sentence explains why the moon can be seen from the earth at night?
here are the options to choose from

Answers

Answer:

a

Step-by-step explanation:

Answer:

A - The Moon reflects light from the Sun.

Step-by-step explanation:

As the moon moves around the sun in a one month cycle, different parts of it are exposed to the sun. When it is exposed to the light from the Sun it is reflected and people on Earth could see it at night, and sometimes during the day as well.

4
Mathematical
9. PRACTICE Model Math The
table shows the lengths of four
trails at a horseback riding camp.
Estimate the total length of all the
trails.

Answers

Answer:

11

need more characters

What is the rule when reflecting across the line y = x

Answers

Answer: switch the x and y values of the coordinates

(x, y) —> (y, x)

if x+1/x = 5 find the value of x^3 +1/x^3. pls solve​

Answers

Answer:

1) solve x+1/x = 5

[tex] \frac{x + 1}{x} = 5[/tex]

[tex]x + 1 = 5x[/tex]

[tex]x - 5x = - 1[/tex]

[tex] - 4x = - 1[/tex]

[tex]x = \frac{ -1}{ - 4} [/tex]

[tex]x = \frac{1}{4} [/tex]

2) solve x³+1/x³

[tex]x {}^{3} + \frac{1}{x {}^{3} } [/tex]

substitute x = 1/4 into the expression

[tex]( \frac{1}{4} ) {}^{3} + \frac{1}{( \frac{1}{4}) {}^{3} } [/tex]

[tex] \frac{1}{64} + \frac{1}{ \frac{1}{64} } [/tex]

[tex] \frac{1}{64} + \frac{64 \times 1}{1} [/tex]

[tex] \frac{1}{64} + 64[/tex]

[tex] \frac{4097}{64} \: or \: 64.02[/tex]

A shoe store uses a 50% markup for all of the shoes it sells. What would be the selling
price of a pair of shoes that has a wholesale cost of $63?

Answers

$94.5
explanation: 50% * 63 = 31.5
31.5+63=94.5

Flying to Havana with a tailwind a plane averaged 258 km/h. On the return trip the plane only
averaged 218 km/h while flying back into the same wind. Find the speed of the plane in still air
and the speed of the wind.

Answers

I got you the answer is 500000000000000000000000000000000°°000000

49y²+42y+9 please I need help, I promise to rate you as the brain lest when I get the exact answer am looking for ​

Answers

Answer:

[tex]\huge\boxed{\sf (7y+3)(7y+3)}[/tex]

Step-by-step explanation:

[tex]\sf = 49y^2+42y+9\\\\=(7y)^2+2(7y)(3)+(3)^2\\\\Using \ Formula \ a^2+2ab+b^2 = (a+b)^2\\\\= (7y+3)^2\\\\= (7y+3)(7y+3)\\\\\rule[225]{225}{2}[/tex]

Hope this helped!

~AH1807

If KLM= NOP, find the perimeter of KLM.

Answers

Answer: 34 units

Step-by-step explanation:

I took the test

what is 90% of 130?​

Answers

Answer:

117

Step-by-step explanation:

(0.9)(130)

=117

Answer:

117

Step-by-step explanation:

Step 1:

[tex]\frac{x}{130} = \frac{90}{100}[/tex]           Equation

Step 2:

100x = 11700      Multiply

Step 3:

x = 11700 ÷ 100       Divide

Answer:

117

Hope This Helps :)

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