Mathematics High School

Solve for x.
7(x - 3) + 3(4 - x) = -8


x = 25/10
x= -16/19
x= -41/10
O x = 1/4

Answers

Answer 1

Answer:

x = 1/4

Step-by-step explanation:

Calculations:

[tex]7(x-3)+3(4-x)=-8[/tex]

[tex]7x-21+12-3x=-8[/tex]

[tex]4x-9=-8[/tex]

[tex]4x=1[/tex]

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

Related Questions

matematikte terim nedir​

Answers

Answer: Cebirsel ifadede bulunan birden fazla değişken çarpımına veya 1 tane bilinen 2 tane bilinmeyen buna terim denir.

Step-by-step explanation:

A bag contains 15 blue marbles, 5 red marbles, and 11 green marbles. How many blue marbles must be removed

from the 31 marbles in the bag so that the probability of randomly drawing a blue marble is ?

Answers

A bag contains 15 blue marbles, 5 red marbles, and 11 green marbles. How many blue marbles must be removed

from the 31 marbles in the bag so that the probability of randomly drawing a blue marble is 1/3?

Answer:

7 blue marbles

Step-by-step explanation:

15 blue

5 red

11 green

Total = 31

Number of Blue marbles that must be removed to obtain a probability of :

P(blue) = 1/3

Probability = required outcome / Total possible outcomes

Let number of blue marble to be removed = x

Number of Blue becomes : 15 - x

Total becomes : 31 - x

P(blue) = 1/3

1/3 = (15 - x) / (31 - x)

1/3 * (31 - x) = 15 - x

(31 - x) / 3 = 15 - x

31 - x = 45 - 3x

-x + 3x = 45 - 31

2x = 14

x = 14 / 2

x = 7


Which shows an explicit formula for a sequence whose first term is 8 and
whose common difference is 7?

Answers

Answer:

7n + 1

Step-by-step explanation:

the general formula for figuring out the formula of a sequence is a + (n - 1)d, where a = the first term and d = the common difference

The question tells u that the first term is 8 and the common difference is 7

Knowing this, you can substitute those values into the formula and simplify:

a + (n - 1)d

= 8 + (n - 1)*7

= 8 + (7n -7)

= 8 + 7n - 7

= 7n - 7 + 8

= 7n + 1

and there's your explicit formula! hope this helped!

16:25 simplified (ratio)

Answers

Answer:

its already simplified the most but as a decimal its 0.64

Step-by-step explanation:

you cant simplify it anymore

If the price of a sweater was $37.38 after a 35% discount, what was the original price? Round your answer to the nearest cent.

Answers

Answer:

$57.51

Step-by-step explanation:

If the price of a sweater was $37.38 after a 35% discount, what was the original price? Round your answer to the nearest cent.

The formula for the original price =

= Sales price/1 - Percentage discount

Percentage discount = 35% = 0.35

Original price = $37.38/1 - 0.35

= $37.38/0.65

= $57.507692308

Approximately = $57.51

Therefore, the original price H= $57.51

-8+2n+10+5n simply the expression .

Answers

Step 1: Add the two terms together
Add -8 and 10 to get 2
(2 + 2n + 5n)

Step 2: 2 + 2n +5n
Combine like terms
Combine 2n and 5n to 7n

Answer= 2 + 7n

that’s how you do it ^


(x⁵+x⁴-x³-5x+4)÷(x+ 2)​

Answers

Answer:

[tex](x^4 - x^3 + x^2 +2x -1) \times (x + 2) + 6[/tex]

Step-by-step explanation:

(see image)

l

The function P(1) - 5,000(1.098)' models the value, in dollars, of a painting after t years. What is the initial value of the painting?

Answers

Answer:

the answer is $5,000

Step-by-step explanation:

the question is asking what the initial value of the painting is and in the equation, they are trying to find out how much the painting will cost after t years. the 1.098 is how much the painting decreases each year and it is being multiplied by &5000 so $5000 is the original value of the painting.

Can I get some help on this pls

Answers

Answer:

GCF=1  

Add=13

Multiply=30

Step-by-step explanation:

GCF:

   Factors of Ten= 10, 5, 2, 1

   Factors of Three= 3, 1

   Common factors = 1

Add:

   10+3 = 13

Multiply:

   10x3 = 30

someone pls factorise step by step x^2 + 5x - 24​

Answers

Answer:

this is the answer okay

Step-by-step explanation:

thisis the answer

Suppose you have a bag of colored plastic disks and you choose one without looking. The probability the disk you choose is yellow is P(yellow)=5/25. Write this probability as a decimal. Use a word or phase to describe this probability
Pleas help I give 90 points

Answers

Answer:

First, your only giving 45

Step-by-step explanation:

Second,

Part 1:

P(yellow)  [tex]\frac{5}{25}[/tex]  as a decimal is 0.2

Part 2:

What best describes the​ probability?

A: Unlikely

WILL GIVE BRAINILEST

The price of ground beef varies directly with the weight of the ground beef purchased. Two pounds of ground beef cost $10.

What is the cost of 3 pounds of ground beef?

Answers

15, 1 ground beef cost $5
The price of 3 pounds would be $15

8. The city commission would like to install new flagpoles that are each
45 feet tall. How tall are the flagpoles in the model?

Answers

Answer:5

Step-by-step explanation:

Mrs.Browns rectangular kitchen is 10 ft wide and.16 ft long, if she creates a scale drawing.With a length of 4 inches, what would be the width

Answers

Answer:

2.5 inches

Step-by-step explanation:

1 feet = 12 inches

The length is 16 ft x 12 = 192 inches

The length was scales by an unknown measure which i would represent with x . The equation is as follows

192 inches x a = 4 feet

a = 48

The kitchen was scaled by 48

10 x 12 = 120 inches

120/48 = 2.5 inches

Write an expression that is equivalent to 7 3/4 + 3 5/6 - 1 3/4 that uses addition instead of subtraction

I need this ASAP please I’ll make it 20 points

Answers

-1 3/4 + 7 3/4 + 3 5/6

What is the value of z?
Z =

Answers

Answer:

Step-by-step explanation:

There is know question please update it.

hshsswwwssswww

Step-by-step explanation:

A restaurant offered 18% off the price of an entree. The amount of discount was $2. What is the regular price of the entree?

Answers

2 x 0.18 = 0.36

2 - 0.36 = 1.64

Answer is $1.64

PLZ HELP ME:Evaluate: What is the value of the expression -5(3 + 4)?

Answers

Answer:

-35

Step-by-step explanation:

PEMDAS

Answer:

-35

Step-by-step explanation:

PEMDAS

solve for 3+4=7

-5*7=-35

HELPPPPP GIVING BRAINLIEST

Which event typically causes upwelling?

Wind blows warm water away from the shore.
Warm water rises to the surface of the ocean.
Neap tides move cold water away from the shore.
Cold water falls to the bottom of the ocean and pushes warm water up.

Answers

it's wind blows warm water away from the shore.

Step-by-step explanation:

it is one hundred percent correct

Answer:

A

Step-by-step explanation:

Wind blows warm water away from the shore.

2. Emma knows that her mix of 5 cups of orange juice to 2 cups of ginger
ale will create enough drink for 7 people. If she is looking to create
enough drinks for 28 people, how many cups of orange juice will she
need? *

Answers

Answer:

11 1 /2 ( 11 and a half)

Step-by-step explanation:

If you noticed 7 and 2 are five numbers away.

To solve this I just added one to both of them until the sum was equal to 28.

If I had added one to 16 and 11, it would have given me 29, so I added a half.

That gave me 28.

There are 171 South American animals in a zoo. That is 40 more than half the number of African animals in
the zoo. Enter an equation you could use to find n, the number of African animals in the zoo.

Answers

171-40=131
131x2=262 African Animals

Please help me guys

Answers

2nd one its like one big right angle so must add to 90
So (x+9)+2x=90
(x+9) + 2x = 90
Explanation: (x+9) and 2x are two angles inside the 90 degree angle. Therefore if they are added together they will make the 90 degrees.

Find the slope for the points (5,7) and (8,4)

Answers

Answer:

-1

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(4-7)/(8-5)

m=-3/3

m=-1

Answer:

m = -1

Step-by-step explanation:

m represents the slope.

30 times 6 divided bye 8

Answers

Answer:

22.5 hope i helped you out

Step-by-step explanation:

Answer:

22.5

Step-by-step explanation:

I used a calculator:))))hope it helped:))))))

what are the coefficients in the expression 4x+y+6z+12

Answers

Answer:

4, 1, 6

Step-by-step explanation:

The coefficient of x is 4

The coefficient of y is 1

The coefficient of z is 6

The coefficient of a variable is the number that appears before it.

which of the following expressions is equal to 5-2m?

A) 7-2(m+1)
B) 7-2(m-2)
C) 7-(2m-5)

Answers

The answer would be A. Make sure you also use BEDMAAS, and take care of the brackets first

Does anyone know this. Please help.

Answers

Answer:119

I'm new so don't just take my answer

Step-by-step explanation:

I. find the distance the two given points​

Answers

Answer:

Step-by-step explanation:

Use the formula,

distance = √[(x1-x2)^2 + (y1-y2)^2]

Find X Give your answer in simplest form

Answers

Given:

A figure of a right angle triangle.

To find:

The value of x.

Solution:

In a right angle triangle,

[tex]\tan \theta = \dfrac{Opposite}{Adjacent}[/tex]

In the given triangle,

[tex]\tan (30^\circ) = \dfrac{x}{7}[/tex]

[tex]\dfrac{1}{\sqrt{3}}=\dfrac{x}{7}[/tex]

On multiplying both sides by 7, we get

[tex]\dfrac{7}{\sqrt{3}}=x[/tex]

Therefore, the value of x is [tex]x=\dfrac{7}{\sqrt{3}}[/tex].

5/6x8/9 as an improper fraction

Answers

Answer:

[tex] \frac{20}{27} [/tex]

Step-by-step explanation:

this can not be converted into a improper fraction

consider downloading photomath

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