Mathematics High School

Evaluate:
5x2 – 2 (y + 1) + 9 when x = 2 and y = 1.

Answers

Answer 1

Answer:

25

Step-by-step explanation:

[tex]5x^{2} - 2 ( y + 1)+9 = 5*2^{2} - 2(1 + 1) + 9 = 5 *4 - 4 +9 = 20 - 4 + 9 = 20 + 5 =25[/tex]

Answer 2
25

5x^2-2(y+1)+9
5(2)^2-2(1+1)+9
5(4)-2(2)+9
20-4+9
16+9
25

Related Questions

what is the slope (2,6) (-1, -5)

Answers

answer is 11/3.

HOPE THIS HELPS
mark me brainleist pls

algebra work please help needed

Answers

Answer:

64

Step-by-step explanation:

Hope this helps! :)

Answer:

64 is correct hope it helped have a good day mate

Solve 3x - 5 = 16
Write your solution starting with x= .

Answers

Answer:

x = 7

Step-by-step explanation:

3x - 5 = 16

3x = 16 + 5

3x = 21

x = 21/3

x = 7

1x +y = -7
1x - y = 3

Answers

cap

Step-by-step explanation: gxetuciv

3. Which of the following is equivalent to the expression 8^5 x 8^2

Answers

Answer:

2097152 is the answer to your question

Answer:

2,097,152

Step-by-step explanation:

8 to the 5th power is 32,768 and 2 to the 2nd is 64

We multiply those two numbers, and we get 2,097,152

Hope this is right, and helps! Please mark Brainliest!!

Reasoning Explain why either a or b must be 0 if ab = 0, but neither a nor b
must be 4 when ab = 4.

Answers

By the zero product property, a or b must be 0 if ab = 0. Or you could solve for each variable.

Divide both sides by b:
b=0/a —> b=0

Divide both sides by b:
a=0/b —> a=0

Hmm A could be 4 and b could be 1 because 4*1=4

7x + 3y = -9
Slope intercept form

Answers

y = 7/3x - 3 should be correct

pls help:(...........———

Answers

Answer:

Just for points sorry

Step-by-step explanation:

Answer:

32

Step-by-step explanation:

6+12+14=32

When building a house, the number of days required to build is inversely proportional to with the number of workers. One house was built in 147 days by 4 workers. How many days would it take to build a similar house with 42 workers?

Answers

Answer:

14

Step-by-step explanation:

[tex]147 \times 4 \div 42 = 14[/tex]

It would take 14 days  to build a similar house with 42 workers

What is the fundamental principle of multiplication?

Multiplication is the mathematical operation that is used to determine the product of two or more numbers. If an event can occur in m different ways and if following it, a second event can occur in n different ways, then the two events in succession can occur in m × n different ways.

We are given that  the number of days required to build is inversely proportional to with the number of workers.

One house was built in 147 days by 4 workers.

So,

147 x 4 = 588

Now the days to build a similar house with 42 workers

588/ 42 = 14

Learn more about multiplications;

https://brainly.com/question/14059007

#SPJ2

Wendy wants to run 3 miles. Each lap around the track at her school is mile.
Wendy wants to figure out how many laps she needs to run.

Answers

Answer:

Wendy needs to run 3 laps to run 3 miles.

Hope this helps. :)

find the missing length indicated ​

Answers

4/16= x/20
1/4 = x/20
20 = 4x
x = 5

What is 17 = 3x + 2 ?

Answers

Answer:

x = 5

Explanation:

Subtracting 2 from both sides of the equation

17 − 2 = 3x +2 − 2

15=3x

Dividing both sides by 3

15/3 = 3x/3

5 = x

Answer:

x=5

Step-by-step explanation:

Solve the equation: 1/2(4x - 16) = 14
what is x
x = 11

x = 3.75

x = -2

x = 5

Answers

Answer:

        x = 11

Step-by-step explanation:

1/2(4x - 16) = 14

2x - 8 = 14             {add 8 to both sides}

 2x = 22               {divide both sides by 2}

   x = 11

PLEASE HELP
Evaluate the following expressions using the distributive property:

Answers

Answer:

You multiply the number outside the parentheses by each one I side the parentheses. Following the distributive property, you have to "distribute" the multiplication, so each number/variable gets multiplied by the first number.

Hope this helps!

PLEASE HELP ME OLEASE UT URGENT !

Answers

Answer:

Explanation:

m = (y1 - y)/(x1 - x)

y1 = 50, y = 90
x1 = 2, x = 4

m = (50 - 90)/(2 - 4)
m = -40/-2
m = 20

b is the y intercept = 50

So our equation is written as:

y = 20x + 50

735×26=
I'm too lazy to do it
I learned it I know it's easy but I'm too lazy to even think about math

Answers

Answer:

19,110

Step-by-step explanation:

Answer:

26460

Step-by-step explanation:

Totally know that lazy feeling, happy to help =)

The temperature at noon was 5 degrees and drops 15 degrees. What is the new temperature?

Answers

The temperature would be -10 degrees

How much must be added to each of the three number 1, 11, and 23 so that together they form a geometric progression?

Answers

Answer:

49

Step-by-step explanation:

Let the three numbers be a1, a2, a3

Let the number to be added to form a geometric progression = x

a1 = 1 + x ; a2 = 11 + x ; a3 = 23 + x

For a geometric progression :

a2 = a1 * r

a2 = (1+x)r

11+x = (1+x)r - - (1)

r = (11+x) / (1+x) ---(1)

a3 = a2 * r

a3 = (11+x)r

23+x = (11+x)r - - -

r = (23+x) / (11+x) - - (2)

Equate (1) and (2)

(11+x) / (1+x) = (23+x) / (11+x)

(11+x) * (11+x) = (23+x) * (1+x)

121 + 22x + x² = 23 + 24x + x²

121 + 22x + x² - x² - 24x - 23 = 0

98 - 2x = 0

-2x = - 98

x = 98 / 2

x = 49

x + 5 = 29
solve for x :
solve for y:

Answers

Answer:

valor de x: 24

valor de y:5

Answer:

x is 24 but wdym solve for y?

Step-by-step explanation:

If two supplementary angles are 3 x space plus space 7 and 2 x minus 1, what is the value for x?
Write your answer as a decimal.

Answers

Answer:

3x + 7 + 2x -1

Step-by-step explanation:

(3x+2x)+(7-1)

5x + 6

6 / 5

x=1.2 or 2/10

In the figure, j∥k and m∠1 = 63°.

What is the m∠4?

Enter your answer in the box.

°

Answers

Answer:

∠ 4 = 117°

Step-by-step explanation:

∠ 1 and ∠ 4 are alternate angles and supplementary, sum to 180°, then

∠ 4 = 180° - 63° = 117°

Answer: The answer is 117

Step-by-step explanation: I just took the Quiz hehe lol

14 4/9+ 25 1/6+ 7 11/18=

Answers

Answer:

47 2/9

hope this help :)

Answer:

47 2/9

Step-by-step explanation:

( 14 + 25 + 7) + ( 4/9 + 1/6 + 11/18)

46 + 11/9

46 + 1 2/9

47 2/9

1. Bryan randomly selects 2 items from his closet. What is the probability that he selects 2 pairs
of pants?

Answers

A 40% or 50% I think

Select the car that gets the best gas mileage per
gallon of gas.

A. Car A can travel 19 miles using 0.7 gallons of gas.

B. Car B can travel 21 miles using 0.6 gallons of gas.

C. Car C can travel 15 miles using 0.4 gallons of gas.

D. Car D can travel 35 miles using 1 gallon of gas.

Answers

The answer is c because it’s talking less gas
The answer is C it travels 3.75 miles per 0.1 gallons

I need this quick!!!
Write down the similarities and differences of photosynthesis and chemosynthesis (venn diagram) first to answer appropriately will get brainliest!

Answers

They are both processes by which organisms produce food. Photosynthesis is powered by sunlight while chemosynthesis is powered by chemical energy

Answer:

They are both processes by which organisms produce food. Photosynthesis is powered by sunlight while chemosynthesis is powered by chemical energy

ik I'm late but just wanted points hope you passed whatever you did

Cate and Elena were playing a card game. The stack of cards in the middle had 26 cards in it to begin with. Cate added 8 cards to the stack. Elena then took 7 cards from the stack. Finally, Cate took 7 cards from the stack. How many cards were left in the stack?

Answers

20 cards are left 26+8=34-14=20 (14 because they both took 7)

Solve for X

Thank you

Answers

Answer:

X is equal to 5

Step-by-step explanation:

The tangents of a circle is always equal, which means 2x + 7 = 5x - 8. After you solve this equation, you will get that X = 5.

Simplify by combining like terms.
12+5t−4+15t+1

Answers

Answer:

9+20t

Step-by-step explanation:

Look at the terms and see which has t and which is a number when you see like terms, add them or subtract them together to get like terms.

nolur cözebilirmisiniz​

Answers

Answer:

vvhfdefg

is c60

How do I find x in this problem?

Answers

Answer:

125

Step-by-step explanation:

Since its a hexagon the interior angles equal to 720 degrees.

Because (n-2)180 equals the number of sides. So, (6-2)180 = 720.

Now for x,

120 + 130 + 100 + x + 135 + 110 = 720

595 + x = 720

x = 125

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