Basically I Have Maths Homework And I Don't Know The Answer So HELP ThankYou x

If f(x)=2x-5, then f(4) is____. A. 17 B. 3 C. 4 D.5

vladimir2022 [97]

???? Can you be more specific please

3 0

3 years ago

Select the correct choices to complete the sentence. Three drivers competed in the same fifteen drag races. The mean and standar

sweet [91]

Answer:

<h2> Driver B has the fastest race time</h2>

Step-by-step explanation:

From the options presented, driver B has the fastest typical race time because he recorded the smallest time taken to complete an individual race.

Also from the standard deviation given (3.96) for driver B, it shows that the individual time spread from the standard deviation is minimal and that the driver maintained a fairly consistent time of race throughout the racing period.

4 0

4 years ago

If (x+1)(x-3)=12, then which of the following statements is true?

Semmy [17]

Answer:

C. x-5=0 or x+3=0

Step-by-step explanation:

Given,

$(x+1)(x-3)=12$

$x^2+1x-3x-3=12$ ( By multiplication )

$x^2-2x-3=12$ ( By operating like terms )

$x^2-2x-3-12=0$ ( Subtracting 12 on both sides )

$x^2-2x-15=0$

$x^2-5x+3x-15=0$ ( By middle term splitting )

$x(x-5)+3(x-5)=0$

$(x+3)(x-5)=0$

By the zero product property,

$(x+3)=0\text{ or }(x-5) =0$

Hence, option C is correct.

6 0

3 years ago

Read 2 more answers

GIVING BRAINIEST ANSWER QUICK PLEASE!!!!!

PIT_PIT [208]

D. because 144/36=4 and the square root of 4 is 2

4 0

3 years ago

Read 2 more answers

At a carry-out pizza restaurant, an order of 3 slices of pizza, 4 breadsticks, and 2 juice drinks costs $13.35. A second order o

BartSMP [9]

Answer: Pizza = $2.95, Breadstick = $0.50, Juice = $1.25

Step-by-step explanation:

Let P represent the cost of a slice of pizza

and B represent the cost of breadstick

and J represent the cost of a juice drink.

EQ1: 3P + 4B + 2J = 13.35

EQ2: 5P + 2B + 3J = 19.50

EQ3: 4B + J = P + 0.30 --> P - 4B - J = -0.30

Let's eliminate B from EQ1 and EQ2 to form EQ4:

3P + 4B + 2J = 13.35 → 1(3P + 4B + 2J = 13.35) → 3P + 4B + 2J = 13.35

5P + 2B + 3J = 19.50 → -2(5P + 2B + 3J = 19.50) → -10P - 4B - 6J = -39.00

EQ4: -7P -4J = -25.65

And eliminate B from EQ1 and EQ3 to form EQ5:

3P + 4B + 2J = 13.35

P - 4B - J = -0.30

EQ5: 4P + J = 13.05

Now, eliminate J from EQ4 and EQ5 to solve for P:

-7P - 4J = -25.65 → 1(-7P - 4J = -25.65) → -7P - 4J = -25.65

4P + J = 13.05 → 4(4P + J = 13.05) → 16P +4J = 52.20

9P = 26.55

÷9 ÷9

P = 2.95

Plug in P = 2.95 into EQ4 or EQ5 to solve for J:

EQ5: 4P + J = 13.05

4(2.95) + J = 13.05

11.80 + J = 13.05

J = 1.25

Plug in P = 2.95 and J = 1.25 into either EQ1 or EQ2 or EQ3 to solve for B:

EQ3: 4B + J = P + 0.30

4B + 1.25 = 2.95 + 0.30

4B + 1.25 = 3.25

4B = 2.00

B = 0.50

Check (since we used EQ3 to find B, use either EQ1 or EQ2):

EQ2: 5P + 2B + 3J = 19.50

5(2.95) + 2(0.50) + 3(1.25) = 19.50

14.75 + 1.00 + 3.75 = 19.50

19.50 = 19.50 $\checkmark$

6 0

3 years ago