Can someone please help me with this problem?

Answer:

1. -564

2. 11 1/2

3. 45/472

5. 3(2x - 1) = 3(2x) - 3(1)

6. 1/5(x) + 2y

= x/5 + 2y

7) 77.1km

8. 211.8 pizzas

Step-by-step explanation:

1. 4 (6) -2 (8) + 4-576

= 24 - 16 + 4 - 576

= 24 + 4 - 16 - 576

= 28 - 16 - 576

= 28 - 592

= -564

2. 2 3/4 + 8 3/4

Mínimo común múltiplo de los denominadores = 4

2 3/4 + 8 3/4

= (2 + 8) + (3 + 3/4)

= 10 + (6/4)

= 10 + 1 2/4

= 10 +1 1/2

= 11 1/2

3. (9/4) (6/59 (1/2) 2/6 ÷ 6/5

BODMAS

= 9/4 × 6/59 × 1/2 × 2/6 ÷ 6/5

= 9/4 × 6/59 × 1/2 × 2/6 × 5/6

= 45/472

5. Expresar el lenguaje común 6x -3

Factoriza la expresión algebraica

6x - 3 = 3 (2x - 1)

3 (2x - 1) = 3 (2x) - 3 (1)

6. Expresar en lenguaje algebraico. "La quinta parte de un número más el doble de un número diferente.

Sea un número representado por x

Sea un número diferente representado por y

Por lo tanto:

1/5 (x) + 2 años

= x / 5 + 2y

7. Si con 7 L de gasolina recorrí 30 km, con 18 L, ¿cuántos kilómetros?

7 L = 30 km

18 L = x km

Cruz y

7L × x km = 18L × 30km

xkm = 18L × 30km / 7

= 77.142857143km

≈ 77.1 kilometros

8. Si con 17 pizzas gigantes comen 90 personas, con 40 pizzas ¿cuántas personas comen?

17 pizzas gigantes = 90 personas

40 pizzas =

Cruz multiplicar

40 pizzas × 90 personas / 17

= 211.76470588 pizzas

≈ 211.8 pizzas

Answer:

B. 850-100

Step-by-step explanation:

Less than means you should take away (subtract). Since Diego scored less than Maria you are taking the number of points Diego got away from Marias points. So it would be 850 take-away 100, or 850-100.

Answer:

I may be wrong here, but I think it's C If not then I have no idea ;-;

Step-by-step explanation:

Answer:

This question makes no sense... It says 12 are in mint condition, then says only 6 are? I'd just say 18? I have no clue what equation to go with though. Sorry.

Step-by-step explanation:

Answer:

"A" is correct.

Answer: -4

Step-by-step explanation: :\

Answer:

T < -19

Step-by-step explanation:

The first mistake is that she went from 3x-2 to 3x+2. Everywhere you see "3x+2", change it to "3x-2".

Another mistake is we shouldn't use absolute value in this case. This is because we're dealing with an odd number index. In this case, the index of the root in the original equation is 3. Because there isn't any absolute value, we won't have a plus/minus.

So we should have 3x-2 = 8 for the third to last step. That solves to x = 10/3 as the only solution.

Answer:

b

Step-by-step explanation:

Answer:

6.2

Step-by-step explanation:

Use the formula for calculating compound interest PN=P0(1+rk)Nk where r is the unknown, PN=2275, P0=1900, k=1, and N=3. Substitute the values into the formula and simplify.

2275=1900(1+r1)3⋅1

Let's simplify within the parenthesis and the exponent.

2275=1900(1+r)3

Divide both sides by 1900.  

22751900=(1+r)3

To isolate the variable, take the cube root of each side.

22751900−−−−−√3=1+r

Subtract 1 from each side to get r by itself.  

22751900−−−−−√3−1=r

Simplify for an answer of r≈0.062 which is the interest rate 6.2%.

Answer:

The largest African elephant weighed 13.5 tons (27,000 pounds) The world record holder weighed this much and stood 13ft/4m tall at the shoulder. There are other species of elephants, namely the Asian and the Indian, but they are much smaller than the African. The African elephant is the king among the giants on land. No other land animal comes close to the size of these creatures. It would take 165 full-grown men to make up the same weight as the world's record African elephant. The noise of an elephant digesting its food (when its tummy's growling) can be heard up to 600ft/183m away. Elephants actually have control over their digestive processes because they are able to stop the sounds of digestion when they sense danger. Here are some other cool elephant factoids:

[tex]π \times ({15})^{2} - π \times ({6})^{2} = [/tex]

[tex]π \times ( {15}^{2} - {6}^{2}) = π \times (225 - 36) = \\ [/tex]

[tex]189π[/tex]

Answer:

14

Step-by-step explanation:

If each burger is 1/4 pounds, that means one pound of ground beef makes 4 burgers. There are 3 1/2 pounds, which means 3 pounds makes 12 burgers and 1/2 pounds makes 2 burgers. 12+2=14

Answer:

im pretty sure that is choice c

Step-by-step explanation:

Answer:

Choose the correct verb form. Identify the reason for the use of each tense.

1. That's the phone. I WILL ANSWER/AM ANSWERING it.

2. I think he is GOING TO BE/WILL BE happier there.

3.Now that I've got some money I WILL BE BUYING

/AM GOING TO BUY a new PC.

4. WILL YOU WORK/ARE YOU WORKING tomorrow

afternoon?

5 This time next week we ARE TRAVELLING /WILL BE TRAVELLING to Chile.

6. Sorry! I WON'T/AM NOT GOING lie again.

7. He's wearing his T-shirt, shorts and trainers. He

WILL BE PLAYING /IS GOING TO PLAY football.

Answer:

-3/2

Step-by-step explanation:

If the slope of a line is a fraction, flip it and change the sign to find the slope of a perpendicular.

-3/2

Answer:

D 63

Step-by-step explanation:

First convert 3 1/2 to a decimal. Then multiply 3.5 by 18.

Answer:

The value of m to be substituted in y – y1 = m(x – x1) is the negative reciprocal of the slope of the given line.

Substitute this in for m.

Substitute the given point, (x1, y1), in the point-slope form.

Isolate y by multiplying out m and subtracting y1 to rewrite the equation in slope-intercept form: y = mx + b.

It should be something like this, hope this helped you!

Answer:

-10

Step-by-step explanation:

you just subtract -4 by 6 and get -10

Answer:10

Step-by-step explanation: Because -4 is four numbers away from zero, and Then add that to six.

Answer:

-12.5

Step-by-step explanation:

You wanna do it inverse backwards

-19 divided 2 = -9.5

-9.5  minus 3 = -12.5

Answer:

D.) [tex]y=19.99x+30[/tex]

Step-by-step explanation:

x represents the hours. The magician charges $19.99 per hour. "Per" means multiplication, so:

[tex]19.99*x[/tex]

[tex]19.99x[/tex]

adding the travel and miscellaneous expense:

[tex]19.99x+30[/tex]

This represents the total charge, represented by y:

[tex]y=19.99x+30[/tex]

:Done

Answer:

430 centimeters

Step-by-step explanation:

Answer:430

Step-by-step explanation:

Answer:

[tex]A = \frac{220}{3}[/tex]

[tex]B = \frac{160}{3}[/tex]

[tex]C = \frac{160}{3}[/tex]

Step-by-step explanation:

Given

[tex]A + B + C = 180[/tex]

[tex]B = C[/tex]

[tex]B = A- 20[/tex]

Required

Solve for A, B and C

The equation binding A, B and C have been written out (above)

Substitute C for B in [tex]A + B + C = 180[/tex]

[tex]A + B + B = 180[/tex]

[tex]A + 2B = 180[/tex]

Substitute A - 20 for B

[tex]A + 2(A - 20) = 180[/tex]

[tex]A + 2A - 40 = 180[/tex]

[tex]3A - 40 = 180[/tex]

Solve for 3A

[tex]3A = 180 + 40[/tex]

[tex]3A = 220[/tex]

[tex]A = \frac{220}{3}[/tex]

Solve for B in [tex]B = A- 20[/tex]

[tex]B = \frac{220}{3} - 20[/tex]

[tex]B = \frac{220 - 60}{3}[/tex]

[tex]B = \frac{160}{3}[/tex]

Recall that [tex]B = C[/tex]

[tex]C = \frac{160}{3}[/tex]

Answer:

5.5

Step-by-step explanation:

Answer:

See below

Step-by-step explanation:

Given relations

Answer to each question below

1..................................

Domain: [0, 4]

Range: [0, 4]

Function? Yes

Explanation: Each input has exactly one output

2..................................

Domain: {8, 9}

Range: {-3, -4, -6, -9}

Function? No

Explanation: Each input has more than one output

3..................................

Domain: {0, 1, 2}

Range: {4, 5, 6, 7, 8}

Function? No

Explanation: Some inputs have more than one output

Answer:

R'= (-4, -1) S'=(-2,1) Q'=(0,0)

Step-by-step explanation:

No, you rotated the triangle 90 degrees clockwise, rotate the triangle counter clockwise (Left not right). the coordinates would be

Answer:

-12

Step-by-step explanation:

add -16 and 9 together to get -7 then add the -5 to get -12

Answer:

-12

Step-by-step explanation:

(PEMDAS)

( -16 + 9 ) - 5 = -12

     -7     -   5 = - 12

Hope this helps!

Answer:

[tex] \huge \boxed{Q( - 7) = 293}[/tex]

Step-by-step explanation:

[tex]Q(x) = {6x}^{2} - 1[/tex]

To find Q(-7) , insert the value of x that's - 7 into Q(x). That is for every x in Q(x) , replace it with - 7

We have

[tex]Q( - 7) = 6 ({ - 7})^{2} - 1 \\ = 6(49) - 1 \\ = 294 - 1[/tex]

We have the final answer as

[tex]Q( - 7) = 293[/tex]

Hope this helps you

Answer:

Step-by-step explanation:

Step 1 : Find the slope/gradient (this is known as "m")

The slope formula is :

[tex]m = \frac{y2 - y1}{x2-x1}[/tex]

*Note that we are given 2 points:

For the first point (-2,-1) , this means x1 = -2 and y1 = -1

For the second point (2,4), this means x2 = 2 and y2 = 4

If we substitute those values into the slope formula you end up with this:

[tex]m = \frac{y2-y2}{x2-x1} = \frac{4 - (-1)}{2 - (-2)} = \frac{4+1}{2+2} =\frac{5}{4}[/tex]

Step 2: Substitute the values into the point-slope formula:

[tex]y - y1 = m(x- x1)[/tex]

Now that we know m = 5/4 , you can substitute this into the above formula and you get:

[tex]y - y1 = m(x- x1)[/tex]

[tex]y - (-1) = \frac{5}{4} (x - (-2)) \\y + 1 = \frac{5}{4} ( x + 2)[/tex]

[tex]y = \frac{5}{4}(x + 2) - 1[/tex]