If f(x)= x^2 +3, evaluate f(-4)

Answer:

(20÷100)×96=19.2

(15÷100)×75=11.25

Answer:

A = 480

B = 500

Step-by-step explanation:

Find A and B??

.

20% of A = 96

[tex]\sf{20\% \times A = 96}[/tex]

[tex]\sf{ \frac{20}{100} \times A = 96}[/tex]

[tex]\sf{A = 96 \div \frac{20}{100} }[/tex]

[tex]\sf{A = 96 \times \frac{100}{20} }[/tex]

[tex]\sf{A = \frac{9600}{20} }[/tex]

[tex]\green{\sf{A = 480}}[/tex]

.

15% of B = 75

[tex]\sf{15\% \times B = 75}[/tex]

[tex]\sf{ \frac{15}{100} \times B = 75}[/tex]

[tex]\sf{B = 75 \div \frac{15}{100} }[/tex]

[tex]\sf{B = 75 \times \frac{100}{15} }[/tex]

[tex]\sf{B = \frac{7500}{15} }[/tex]

[tex] \green{\sf{B = 500}}[/tex]

Answer:

Step-by-step explanation:

By taking k as constant:

P = k/L (where P is pressure, and L is length)

5 = k/2

k = 10

Therefore:

P = 10 / L

P = 10/ 8

P = 1.25 Pounds.

Answer:

An odd number

Step-by-step explanation:

suppose n is 2.

If we add 1 into it, the answer will be 3, making it odd. same goes for any other even number if 1 is added in it

Answer:

correcto

Step-by-step explanation:

Answer:

v = sqrt(a*p)

Step-by-step explanation:

multiply both sides by p

a*p = v^2

square root both sides to get rid of the (^2) on the v

then you'll be left with v= sqrt(a*p)

Answer:tinham em cada onibus 55 alunos

Step-by-step explanation:

9 alunos tiveram que viajar de carro ,ou seja apenas 330 alunos foram de onibus , 339-9 igual a 330 .

Depois de conseguir esse resultado divida o numero de alunos (330) por numero de onibus (6) o resultado sera 55.

Answer:

it is 1 cm because semi means half

Answer:

See answer below

Step-by-step explanation:

ABCD is a parallelogram                     Given

BC ≅ AD; AB ≅ DC                             opposite sides of a parallelogram ≅

Δ AXB = 1/2 (AB)(AD)                           Formula for the area of a Δ

Δ BYC = 1/2 (BC) (DC)                           Formula for the area of a Δ

1/2 (AB)(AD)= 1/2(BC)(DC)                      Substitution

∴ Area of Δ AXB = Area of ΔBYC

Answer: y=(1/5)m+3

Step-by-step explanation:

Start with the standard form of an equation of a straight line:  y=mx+b, whre m is the slope and b the y-intercept (the value of y when x=0).

y=mx+b

We know b (3), so:

y=mx + 3

To find the slope, m, we can use the one given point, (5,4):

y=mx + 3 for (5,4) would be:

4 = m*5+3

1 = 5m

m = (1/5)

y=(1/5)m+3

JK=JH

[tex]\\ \sf\longmapsto 10t=7t+15[/tex]

[tex]\\ \sf\longmapsto 10t-7t=15[/tex]

[tex]\\ \sf\longmapsto 3t=15[/tex]

[tex]\\ \sf\longmapsto t=15/3=5[/tex]

Answer:

=−36k−36

Step-by-step explanation:

=(−4)(9k+9)

=(−4)(9k)+(−4)(9)

=−36k−36

−4(9k+9)

−36k−36

Solution

−36k−36

Answer:

The function is decreasing for x > -1

Step-by-step explanation:

Answer:

descompon potencias de 10 a 700

Step-by-step explanation:

Answer:

I guess...

Step-by-step explanation:

Since QR and PN are parallels, I think what happens in MN and MP is proportional, so:

RN = x

8 is to 10 as

5 is to x

8 * x = 5 * 10

8x = 50

x = 50 / 8

x = 6.25

RN = 6.25

Answer:

38

Step-by-step explanation:

Answer:

Step-by-step explanation:

The speed of sound in water:

Time:

or

Distance in 10 min:

Distance in 1 hour:

Answer

Use a calculator my g ‍♀️

Answer:

\frac{-2x^2+2}{x^4+2x^2+1}

2x^2+2

-------------

x^4+2x^2+1

Answer:

';[P-=';[]-=/

Step-by-step explanation:

';[

]'/.OI'[;147

]

Answer:

B im pretty sure

Step-by-step explanation:

Answer:

4x(x+3)(x+4)

Step-by-step explanation:

Answer:

(x-3)^2 + (y+1)^2 =65

Step-by-step explanation:

1.find centre

2. substitute centre (h,k) into (x-h)^2 + (y-k)^2 = r^2

Answer:

they go around

Step-by-step explanation:

Answer: Store 2

Step-by-step explanation: sorry I don’t know how to explain.

Answer:

[tex](\displaystyle-2,\frac{9}{2} )[/tex]

Step-by-step explanation:

Hi there!

Midpoint = [tex](\displaystyle\frac{x_1+x_2}{2} ,\frac{y_1+y_2}{2} )[/tex] where the two endpoints of the line segment are [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex]

Plug in the endpoints (​-1,-1​) and ​(-3​,10​):

[tex](\displaystyle\frac{-1+(-3)}{2} ,\frac{-1+10}{2} )\\\\(\displaystyle\frac{-4}{2} ,\frac{9}{2} )\\\\(\displaystyle-2,\frac{9}{2} )[/tex]

I hope this helps!

Step-by-step explanation:

The roots or the zeroes of a quadratic equation are its x-intercepts, which are the points on the graph where it crosses the x-axis. When a quadratic equation is in standard form, ax² + bx + c, the usual goal is to find the binomial factors that could help us determine the roots or solutions to the given equation.  Once you find the factors, then you will use the Zero-Product Property to solve for the solutions.  

For example, if you were given the following quadratic equation in standard form, x² + 6x + 8 = 0, and were tasked to find its factors.

x² + 6x + 8 = 0

where a = 1, b = 6, and c = 8:

In order to find the factors of the given quadratic equation, we must find the  factors with a product ac, and sum b.  

Using 2 and 4 as possible factors produce a product that is equal to

product of ac:   2 × 4 = 8

sum of b:           2 + 4 = 6.

Therefore, the factors of the given quadratic equation, x² + 6x + 8 = 0 are:

(x + 2) (x + 4).

Using the Zero-Product Property, where it states that for any real numbers, u and v, if uv = 0, then u = 0 or v = 0.  

Thus, setting the binomial factors of the given quadratic equation to zero will provide the solutions.

(x + 2) (x + 4)

x + 2 = 0

x + 2 - 2 = 0 - 2

x = -2

x + 4 = 0

x + 4 - 4 = 0 - 4

x = -4

Therefore, the solutions to the quadratic equation, x² + 6x + 8 = 0 are x = -2, and x = -4.

Let x be the needed volume of 50% antifreeze solution. x gallons of this solution contains 0.50x gal of antifreeze.

Mixing this amount with 90 gal of 25% solution makes a total volume of (x + 90) gal of solution.

90 gal of 25% solution contains 0.25 (90 gal) = 22.5 gal of antifreeze.

The new mixture would then consist of (0.50x + 22.5) gal.

If its concentration of antifreeze is supposed to be 40%, then

(0.50x + 22.5)/(x + 90) = 0.40

Solve for x :

0.50x + 22.5 = 0.49 (x + 90)

0.50x + 22.5 = 0.49x + 44.1

0.01x = 21.6

x = 2160

Answer:

He would have 0 because he technically cannot have -1 apples.

Step-by-step explanation:

5- (-6) =-1

Answer:

It is 112 calories per cup of cereal.

Step-by-step explanation:

multiply 3/4 by 4 and youll get 3 and them multiple 84 by 4 and you'll get 336. Divide 336 by 3 and youll get your answer.