2 years ago

PLEASE HELP ME I NEED THIS DONE ASAP NO LINKS !!!

Mathematics

2 answers:

Dmitrij [34]2 years ago

7 0

Answer:

-3

Step-by-step explanation:

4z - 15

Let z = 3

4(3) - 15

Multiply

12 -15

Subtract

-3

Alexeev081 [22]2 years ago

6 0

Answer:

4z - 15

4(3) - 15

12 - 15

= -3

High school math? really?

You might be interested in

There are three cell phone models in a store. When selecting a new cell phone, 25% of the customers choose model A, 33% choose m

Andrews [41]

I think the answer is b

6 0

3 years ago

Read 2 more answers

4 tons of bark cost $29,120.00. What is the price per pound?

son4ous [18]

4*2000

29120/8000=$3.64

7 0

3 years ago

Which statement is true about 143? A. It is a prime number. B. It is a composite number. C. It is a whole number that is neither

Stels [109]

Answer:

B. It is a composite number.

Step-by-step explanation:

143 can be divided by 11 and 13 making it a composite number.

5 0

3 years ago

Read 2 more answers

PLEASE HELP!!! Use addition to solve the linear system of equations. Include all of your work in your final answer. 2x + y = 5,

Arturiano [62]

I: 2x+y=5
II:3x+2y=4

start by eliminating y

-2*I: -4x-2y=-10
II: 3x+2y=4

add both equations together

-2*I+II: -4x-2y+3x+2y=-10+4
-1x=-6
x=6

insert x=6 into I:
2*6+y=5
y=5-12
y=-7

so the solution is x=6, y=-7

4 0

3 years ago

The roots of $3x^2 - 4x + 15 = 0$ are the same as the roots of $x^2 + bx + c = 0,$ for some constants $b$ and $c.$ Find the orde

Akimi4 [234]

we are given

quadratic equation as

$3x^2-4x+15=0$

now, we can find b and c from

$x^2+bx+c=0$

we can see that coefficient of x^2 is 1

so, we will have to make coefficient x^2 as 1

so, we divide both sides by 3

$3x^2-4x+15=0$

$\frac{3x^2-4x+15}{3}= \frac{0}{3}$

$\frac{3x^2}{3}-\frac{4x}{3}+\frac{15}{3}= \frac{0}{3}$

now, we can simplify it

$x^2-\frac{4}{3}x+5= 0$

now, we can compare it with

$x^2+bx+c=0$

we get

$b=-\frac{4}{3}$

$c=5$

so, we get order pair as

$(b,c)=(-\frac{4}{3} , 5)$ ..............Answer

6 0

3 years ago

Read 2 more answers