x = −3 y = 4 and z = −5

Work out the value of x + 2y − 3z

Answers

Answer 1

Answer:

20

Step-by-step explanation:

-3+ 2(4) - 3(-5)

= -3+ 8 + 15

=20


Related Questions

Can u guys plz help me it's timed

Answers

Answer: 38

Step-by-step explanation:

Answer:

Perimeter= 38, EC- Area= 19.5

Step-by-step explanation:

substitute all the x's for 5. simplify each equation. H=3, Base= 13, 4x+2=22

h- 5-2=3

4(5)+2=22

base- 2(5)=3=13

then add all answers together to get 38.

multiply 13 and 3 to get 39, then divide by 2 to get 19.5 for the area.

mya bought some pizza for $12 each . f p represents the number of pizza she bough , what expression shows the total amount she spent ?

Answers

Answer:

Step-by-step explanation:

f(p)=12p

Answer:

12p

Step-by-step explanation:

Since each pizza costs $12 dollars and "p" represents how many pizzas she bought, you multiply 12 by "p" to get the total amount of money that she had spent.

will give brainliest find h :)

Answers

Answer:

I don't know I'm really really sorry now can you give me a

What if you wanted to to heaven but god said

Answers

Answer: if god said what?

Step-by-step explanation:

Answer:

god said what? no? if no then I guess your not entering heaven

which point represents the solution to the system
3x-2y=12
2x+2y=3

a. (2,-2/3)
b. (3,-3/2)
c. (3,-2)
d. (2,2)

please explain how you got your answer.

Answers

Answer:

b

Step-by-step explanation:

[tex]3x - 2y = 12 \\ 2x + 2y = 3 \\ 2y = 3 - 2x \\ 3x - (3 - 2x) = 12 \\ 3x - 3 + 2x = 12 \\ 5x = 15 \\ x = 3 \\ 2y = 3 - 6 = - 3 \\ y = - \frac{3}{2} [/tex]

(3, -3/2)

please help i dont understand this

Answers

Answer:

It is the same-side interior angle of B which is the vertical angle of 100 (?)

Step-by-step explanation:

Manny ran a total of 77 miles over the course of 7 track practices. How many track practices would it take for Manny to run 99 miles? Assume the relationship is directly proportional.

Answers

Answer:

just add them up

Step-by-step explanation:

Jack had $200 when he got to the festival. He spends $4 per ride. The equation T = 200 – 4R models his amount of money. If he has $100 left how many rides did he go on

Answers

Answer:

25

Step-by-step explanation:

Given the equation :

T = 200 - 4R

T = amount of money left ; if T = $100

R = number of rides

$100 = 200 - 4R

$100 - $200 = - 4R

-$100 = - 4R

R = 100/ 4

R = 25

25 rides

Jose rents a bike for $4 plus $2.50 per hour. ELaine rents a moped for $10 plus $1 per hour write and solve the system of equation to determine at what point they spend the same amount

I need an answer quick

Answers

Answer:

Jose: Y= 2.50x +4

Elaine Y= 1x +10

same at 4

Step-by-step explanation:

What is 75 times 4 does anyone know if they do I need a asnwer asap Please and Thank you

Answers

Answer:

75 x 4 = 300

Step-by-step explanation:

Ummmm multiplication

The answer to your question is 300


To go to the park, It costs $4 plus $3 per child. Which equation shows this situation
where x represents the number of children

Answers

Answer:

y = 3x + 4

Step-by-step explanation:

Because $4 is your base pay, it is your y-intercept. And because it is $3 per child, then that is your slope. "x" represents how many objects/people/etc. there could be.

Which postulate proves the two triangles
congruent?
Account


SAS

SSS

AAS

ASA

Not congruent

Answers

Answer:

HL

Step-by-step explanation:

PQ = PR     {hypotenuse}

PS = PS      {Reflexive property, PS is the leg of the both triangles}

∠PSQ = ∠PSR = 90

So, HL postulate

find the area.......

Answers

A of triangle= 1/2*b*h
A= 1/2*9.1*6
= 27.3mi^2

Answer:

A= 1/2*9.1*6

= 27.3mi^2

Step-by-step explanation:

i actaully knew this im not sure why they deleted my last answer

Can someone please help me. WILL MARK YOU BRAINLIEST!!

Answers

Answer:

A. y > -3 All real numbers greater than -3

Step-by-step explanation:

Please help me answer this question of Fractional Linear Equations. I provided the example of how to do it in case you forgot/don't know how to anymore. I'll give out brainliest. Thank youu

Answers

15 = ½ (7x-6)

distribute ½ into parentheses

15 = ½(7x) - ½(6)

15 = ⁷/₂x - 3

multiply by 2

30 = 7x -6
subtract +6 to both side

30 + 6 = 7x

36 = 7x

devide 7 to both side

36
------ = x
7

Which property is demonstrated by the following equation? 5(3+7)=15+35

a. Distributive Property
b. Associative Property of Addition
c. Commutative Property of Addition
d. Associative Property of Multiplication

Answers

Which property is demonstrated by the following equation? 5(3+7)=15+35

a. Distributive Property
b. Associative Property of Addition
c. Commutative Property of Addition
d. Associative Property of Multiplication

Jessica school bus stop is 60 yards from her house.For a normal school week, how many feet will Jessica walk to and from the bus stop?

A 300 feet

B 600 feet

C 900 feet

D 1,800 feet

winner gets 100 points

Answers

Answer:

d

Step-by-step explanation:

school is only 5 days a week and if she walks 60 yards to the bus stop and 60 yards back from the bus stop than she walks a total of 120 yards a day

120 x 5 =600 the answers are in feet so we need to convert to feet and to do that we need to multiply by 3

600x3=1800

so she walks 1800 feet in a normal school week

Answer:

Step-by-step explanation:

Does anyone know the answer to this!?!?

Answers

Answer:

option B is correct answer

the answer is b u had it right

a certain number of two digit is three times the sum of its digit and if 45 added to it the digit will be reversed find the number ?​

Answers

· Author has 184 answers and 67.6K answer views
Let the number be (10 x + y)

Then, 10 x + y = 3 * (x + y) (given)

Or, 10 x + y = 3 x + 3 y

Or, 10 x - 3 x = 3 y - y

Or, 7x = 2 y

Or, x = 2 y / 7 ( Eq. 1)

Also, 10 x + y + 45 = 10 y + x ( given)

Or, 10 x - x = 10 y - y - 45

Or, 9 x = 9 y - 45 ( Eq. 2)

Substituting the value of x from (Eq. 1) in (Eq. 2), we have:

9 * 2 y / 7 = 9 y - 45

Or, (9 y ) - (18 y / 7) = 45

Or, 63 y - 18 y = 315

Or, 45 y = 315

Or, y = 7

From (Eq. 1),

x = 2 * 7 / 7 = 2

So, the number is 10 x + y = (10 * 2) + 7 = (20 + 7) = 27

Answer

Check:

Sum of the digits = 2 + 7 = 9

9 * 3 = 27 ✓

Adding 45 to the number 27, we get 72. So, the digits get reversed.

solve for x 11^(x-4)=121^(x)

Answers

Step-by-step explanation:

[tex]11 {}^{x - 4} = 121 {}^{x} \\ 11 {?}^{x - 4} = 11 {}^{11x} \\ x - 4 = 11x \\ x - 11x = 4 \\ \\ - 10x = 4 \\ x = - 0.4[/tex]

sarah used 2.5 cups of cheese in a dish that serves 10 people amyn used 1.6 cups of cheese in a dish that serves 8 people how much more cheese is in one serving of sarahs dish

Answers

Answer:

[tex]\frac{1}{20}[/tex] more cheese in Sarah's dish than Amyn.

Step-by-step explanation:

To find this, we need to get the two fractions, [tex]\frac{2.5}{10}[/tex] and [tex]\frac{1.6}{8}[/tex] to a common denominator. The closest one is a multiple of 4 for [tex]\frac{2.5}{10}[/tex] and a multiple of 5 for [tex]\frac{1.6}{8}[/tex] .

This makes both fractions much more comparable, and we have

[tex]\frac{10}{40}[/tex]  for Sarah's dish

[tex]\frac{8}{40}[/tex] for Amyn's dish.

Knowing Sarah has [tex]\frac{2}{40}[/tex]'s more cheese in her dish, we can still simplify, so after dividing 40 by 2, we get [tex]\frac{1}{20}[/tex], the simplest form of how much more cheese Sarah has in her dish than Amyn,

The size of a computer class is limited to 15 people. If 3 seats are still available, to what percent of its capacity is the full classical

Answers

Step-by-step explanation:

80%full

20% is still available

Its 80% full

and 20% remaining/ seats available

b - 1/4 = 3 1/2 find the variable and explain how to got the answer please thanks

Answers

Answer:

b - 1/4 = 3 1/2

Step-by-step explanation:

b - 1/4 = 3 1/2

b - 1/4 = (3 + 1/2)

4b = 15

b = 15/

4

= 3.75

If a bowling ball is dropped out of an airplane,
what will its speed (velocity) be after 3.4
seconds, assuming no air resistance? (Hint: Use
the equation v = 32t).

Answers

Answer: The velocity of the ball is 108.8 ft/s downwards.

Step-by-step explanation:

When the ball is dropped, the only force acting on the ball will be the gravitational force. Then the acceleration of the ball will be the gravitational acceleration, that is something like:

g = 32 ft/s^2

To get the velocity equation we need to integrate over time, to get:

v(t) = (32ft/s^2)*t + v0

where v0 is the initial velocity of the ball. (t = 0s is when the ball is dropped)

Because it is dropped, the initial velocity is equal to zero, then we get:

v(t) = (32ft/s^2)*t

Which is the same equation that we can see in the hint.

Now we want to find the velocity 3.4 seconds after the ball is dropped, then we just replace t by 3.4s, then we get:

v(3.4s) = (32ft/s^2)*3.4s = 108.8 ft/s

The velocity of the ball is 108.8 ft/s downwards.

The average distance from the Sun to Mars is 22,793, 910,000,000 centimeters.

The conversion factors between centimeters and four other units of measure are shown below.

9.46. 10^17 cm = 1 light-year
1.50.10^13 cm = 1 astronomical
1 . 10^5 cm = 1 kilometer
1. 10^2 = 1 meter

For the distance to be expressed as x units of measure, where 1 < x < 10, which unit of measure must be used?

A Light-years
B) Astronomical units
C)Kilometers
D) Meters​

Answers

Step-by-step explanation:

JOIN MY MEETING

ID-9384026088

PASSWORD 1234

Answer:

C

Step-by-step explanation:

Please helppppppp meeeeeeeeeeeeeeeeeeeeeeeeeeeeee

Answers

Answer:

y = x + 8

Step-by-step explanation:

For 8cm of thread, 1cm of the bracelet may be produced. therefore being y(thread) = x(bracelet) with the addition of 8 (+8). Hope this helps!

Dan has 108 muffins, which he needs to box up, 6 of which are blueberry, into dozens. How many boxes does he need?

Answers

Answer:

9 Boxes

Step-by-step explanation:

Take 108 and divide by 12

If a spider can move ¼ of a mile every hour, then how many hours would it take for a spider to go 6 miles?

Answers

Answer:

6/4 = 3/2

Step-by-step explanation:

multiply 1/4 by 6

factored form for x^2 + 8x + 3​

Answers

x = [-b +- sqrt(b^2-4ac)]/2a

Answer:

x = [-b +- sqrt(b^2-4ac)]/2a

Step-by-step explanation:

PLS HELPPPP GRADES DUE!

Answers

Answer:

Step-by-step explanation:

Starting with ΔABC, draw the dilation image of the triangle with a center at the origin and a scale factor of two. Notice that every coordinate of the original triangle has been multiplied by the scale factor (x2). Dilations involve multiplication! Dilation with scale factor 2, multiply by 2

Answer:

Yea wut she said ._. above me...

Step-by-step explanation:

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