Find the sum of (x — 4) + (2x – 7).

PLEASE FAST NO WORK NEEDED

Answer:

75mg subtracts 60mg equals 15

Answer: 15mg per dose

Step-by-step explanation: 75mg - 60mg = 15mg per dose

Answer:

Is this the question [tex]x^{2}[/tex]+3x+3=−2x−3

Step-by-step explanation:

[tex]x^{2}[/tex]+3x+3=−2x−3

Step 1: Subtract -2x-3 from both sides.

[tex]x^{2}[/tex]+3x+3−(−2x−3)=−2x−3−(−2x−3)

[tex]x^{2}[/tex]+5x+6=0

Step 2: Factor left side of equation.

(x+2)(x+3)=0

Step 3: Set factors equal to 0.

x+2=0 or x+3=0

[tex]y = 10x +2~~....(i) \\\\-5x +4y = -27~~....(ii)\\\\\text{Substitute y =10x+2 in equation (ii):}\\\\\\-5x +4(10x+2) = -27 \\\\\implies -5x + 40x + 8 +27 =0\\\\\implies 35x +35=0\\\\\implies 35(x +1) =0\\\\\implies x +1 = 0 \implies x = -1\\\\\text{Substitute} ~x =-1 ~ \text{in equation (i):}\\\\y = 10(-1) +2 = -10+2 = -8 \\\\\\\text{Hence}~ (x,y) = (-1,-8)[/tex]

Answer:

  (x, y) = (19/35, 52/7)

Step-by-step explanation:

When you have an expression for one of the variables, the "substitution" method of solution is a reasonable choice. Here, we have an expression for y that can be substituted into the second equation.

  -5x +4(10x +2) = 27

  35x +8 = 27 . . . . . . . simplify

  35x = 19 . . . . . . . subtract 8

  x = 19/35 . . . . divide by the coefficient of x

  y = 10(19/35) +2 = 52/7

The solution is (x, y) = (19/35, 52/7).

Answer:

$7.66

Step-by-step explanation:

[tex]0.78 \times 3 = 2.34[/tex]

[tex]10.00 - 2.34 = 7.66[/tex]

Answer:

$7.66

Step-by-step explanation:

1. Multiply $0.78 x 3. (you should get $2.34)

2. Subtract $10.00 from $2.34

Your final answer should be $7.66

Answer:

The answer is MQR= 48 degrees

Step-by-step explanation:

I got this answer from process of elimination. The first option was 48 degrees so I divided 48 by 3 and got 16 then I applied to (2x + 16): (2(16)+16) and got 48 which comfirmed my answer. Also I took the test and it was right so I know its correct.

Large population can be represented in scientific notations

The population in 30 years time is 1.53 * 10^11

The current population is given as:

[tex]\mathbf{Population = 5.1 \times 10^{10}}[/tex]

In 30 years time, the population would be 3 times more.

This means that, the population in 30 years time is: 3 multiplied by the current population.

So, we have:

[tex]\mathbf{New = 3 \times Population}[/tex]

So, we have:

[tex]\mathbf{New = 3 \times 5.1 \times 10^{10}}[/tex]

Multiply

[tex]\mathbf{New = 15.3 \times 10^{10}}[/tex]

Rewrite as:

[tex]\mathbf{New = 1.53 \times 10^{11}}[/tex]

Hence, the population in 30 years time is 1.53 * 10^11

Read more about scientific notations at:

https://brainly.com/question/1705769

Answer:

402

Step-by-step explanation:

Answer:12/5 (3rd option)

Step-by-step explanation:

tangent is opposite over adjacent so take the side opposite the angle A and put it over the side that is adjacent to angle A

Step-by-step explanation:

= 10x - 5 + 3x - 2

= (10 + 3)x + (-5 - 2)

= 13x - 7

Total objects

As

[tex]\\ \sf\longmapsto Unit\:price=\dfrac{Sale\: Price}{No\:of\: units}[/tex]

[tex]\\ \sf\longmapsto Unit\:Price=\dfrac{D_2({E_2)}}{C_2}[/tex]

Or

[tex]\\ \sf\longmapsto Unit P=\dfrac{E_2(D_2)}{C_2}[/tex]

Answer:

Step-by-step explanation:

See attached

Number of units in cell E2, Total price in D2

The formula for unit price is:

Answer:

When k(x) is 2x² - 5x + 3, k(-3) = 36.

Step-by-step explanation:

k(x) = 2x² - 5x + 3

Substitute the input of x.

k(-3) = 2(-3)² - 5(-3) + 3

Square -3.

k(-3) = 2(9) - 5(-3) + 3

Multiply 2 and 9.

k(-3) = 18 - 5(-3) + 3

Multiply -5 and -3.

k(-3) = 18 + 15 + 3

Add 18 and 15.

k(-3) = 33 + 3

Add 33 and 3.

k(-3) = 36.

Answer:

Explanation is

Step-by-step explanation:

Answer:

Length of an Arc = θ × (π/180) × r

Answer:

[tex]\boxed{y = -\dfrac{10}{3}x - 23}[/tex]

Step-by-step explanation:

Equation of a straight line: y = kx + b

Points: (-9,7) and (-6,-3)

Сompose the system of equations:

[tex]\displaystyle \left \{ {{7=-9k + b} \atop {-3=-6k + b}} \right[/tex] [tex]\displaystyle \left \{ {{b= 7 + 9k} \atop {b=6k - 3}} \right \Longrightarrow 7 + 9k = 6k - 3[/tex]

[tex]7 + 9k = 6k - 3[/tex]

[tex]3k = -10|:3[/tex]

[tex]k = -\dfrac{10}{3}[/tex]

[tex]b = 6k - 3= 6 \cdot \dfrac{-10}{3} - 3 = 2 \cdot (-10) - 3 = -20 - 3 = -23[/tex]

[tex]y = -\dfrac{10}{3}x - 23[/tex]

Answer:

26 meters

Step-by-step explanation:

Answer:

the answer is 20.

add up the length, and the hight,

then times it by 2.

BOOM

you get the answer :)

Step-by-step explanation:

Answer:

It the first one BC a and b connects so it make it a 1 one

Answer:

this answer is 6

Step-by-step explanation:

8a- 1 + 0.5b = 8(1/4) -1 +0.5(10)

= 6

Answer:

14 miles per 1 hour (14m/1hr), I hope this helps :)

Answer:

2/5

Step-by-step explanation:

2/3 of 3/5 means to multiply the fractions to get 6/15

6/15 can be reduced by dividing by 3 to get 2/5

Answer:

X>120

Step-by-step explanation:

hope it helps!! :)

Answer:

x = 4.08

Step-by-step explanation:

3x = 12.25

3/3x = 12.25/3

x = 4.0833..

x is about 4.08

Answer:

4.08

Step-by-step explanation:

12.25 / 3 = 4.0833333333333 and round

Step-by-step explanation:

If A is acute, cos (180 - A) = - cos A (because the coordinates would be in 2nd quadrant)

If A is right angle, cos (180 - 90) = cos 90 = 0

(because the coordinates would be on y-axis)

If A is obtuse, cos (180 - A) = + cos A (because the coordinates would be in 1st quadrant)

Answer:

-10

Step-by-step explanation:

Multiple

6*-3=-18

Calculate

-18+8

Answer

y=-10

Answer:

a= 10; b= 4; c= -2 ;d = -5

Step-by-step explanation:

[tex]f(x) = 1-3x\\f(-3) = 1-3(-3)=1-(-9)=1+9=10\\f(-1) = 4\\f(1) = -2\\f(2)=-5[/tex]

Answer:

4.5

Step-by-step explanation:

B(0,-9)

C(-2,-5)

=> BC = [tex]\sqrt{(-2-0)^{2} -(-5+9)^{2} } = 4.4721[/tex]

Answer:

wndie xueu xr

Step-by-step explanation:

nx9rkc9emxirnx8rm

Answer:

B

Step-by-step explanation:

v = how many students fit into a van

b = how many students fit into a bus

School A:

9v+7b=457 (1)

School B:

11v+7b=473 (2)

(1)&(2) => v=8

b=55