Help. (26. Is the question number.)

Answer:

5x² + 5x + 9

Step-by-step explanation:

(3x + 4) + ((5x² - 1) + (2x + 6))

Remove parenthesis

3x + 4 + 5x² - 1 + 2x + 6

Group like terms

5x² + 3x + 2x + 4 - 1 + 6

Subtract 1 from 4

5x² + 3x + 2x + 3 + 6

Add 3 and 6

5x² + 3x + 2x + 9

Combine like terms

5x² + 5x + 9

Answer: 5x² + 5x + 9

Answer:

  False

Step-by-step explanation:

The number of molecules in a mole of any substance is Avogadro's number, 6.022×10^23. The number of moles of a substance is the  mass of it divided by the mass per mole. Here, we expect the number of molecules to be about ...

  (6.022×10^23 molecules/mole) × (50 g)/(87.91 g/mole)

  ≈ 3.425×10^23 molecules

__

The suggested number is approximately 12% low, too far off to be considered "about" correct. The offered statement is FALSE.

Step-by-step explanation:

(y2-y1)/(x2-x1)=(y-y1)/(x-x1)

(-21-15)/(-2-4)=( y-15)/(x-4)

6(x-4)=y-15

6x-y-9=0

Answer:

Step-by-step explanation:

Let s and e represent the grams of 6% and 8% solution, respectively. The given relations can be described by ...

  s + e = 600 . . . . . you have 600 grams of mixture

  0.06s +0.08e = 0.074(600) . . . . grams of alcohol in the mixture

__

The first equation can give an expression for s that substitutes nicely into the second equation:

  s = 600 -e

  0.06(600 -e) +0.08e = 0.074(600) . . . . substitute for s

  0.02e = 0.014(600) . . . . . . subtract 0.06(600)

  e = 420 . . . . . . . divide by 0.02

  s = 600 -420 = 180

You mixed 180 grams of 6% solution with 420 grams of 8% solution.

Answer: 180 grams of 6% solution with 420 grams of 8% solution.

Step-by-step explanation:

Let x and y be the weight (in grams) of 6% and 8% alcohol solution. Since the total weight is 600 grams, therefore,

[tex]$$\Rightarrow x+y=600 \ldots \text { (1) }[/tex]

Using the statement given, we can write the following equation:

[tex]\Rightarrow 6 x+8 y=(7.4)(600)\\ \Rightarrow 6 x+8 y=4440 \text {... (2) }[/tex]

Substitute the value of y from equation (1) into equation (2), we'll get:

[tex]\begin{gathered}\Rightarrow 6 x+8(600-x)=4440 \\\Rightarrow 6 x+4800-8 x=4440 \\\Rightarrow 2 x=360 \\\Rightarrow x=180\end{gathered}[/tex]

Therefore,

[tex]\Rightarrow y=600-180=420[/tex]

Therefore, you mixed 180 grams of 6% solution with 420 grams of 8% solution.

Answer:

Step-by-step explanation:

One way to answer this problem is to notice as x goes up 1, y will go up 2. The relationship is linear. No exponential function is going to do that. The jump will not be so easily described.

So what's the answer?

The exact description is D. It is just what I wrote in more general terms.

Answer:

Given

Step-by-step explanation:

At the beginning it says "Given: AB = CB" so they just gave you that information.

Answer:

h is 9 inches

Step-by-step explanation:

just substitution, easy

75π=2π[tex]r^{2}[/tex](h)(1/3）

Solution:

Given:

[tex]\bullet \ \ \text{Volume of party hat} = 75\pi \text{ inches}^{3}[/tex]

[tex]\bullet \ \ \text{Radius of party hat:}\ 5 \ \text{inches}[/tex]

Recall that the formula to find the volume of a cone is πr²h/3. Now, let's use the formula to find the height.

[tex]\bullet \rightarrow \text{Volume of cone:} \ \dfrac{ \pi r^{2} h}{3}[/tex]

[tex]\bullet \rightarrow \text{Volume of party hat} =\dfrac{ \pi r^{2} h}{3} = 75\pi \text{ inches}^{3}[/tex]

[tex]\bullet \rightarrow \dfrac{ (\pi )( 5^{2})( h)}{3} = 75\pi \text{ inches}^{3}[/tex]

[tex]\bullet \rightarrow (\pi )( 5^{2})( h)} = 75\pi \times 3[/tex]

[tex]\bullet \rightarrow { (\pi )( 25)( h)}= 225\pi[/tex]

[tex]\bullet \rightarrow \dfrac{{ (\pi )( 25)( h)}}{25} = \dfrac{225\pi}{25}[/tex]

[tex]\bullet \rightarrow { (\pi )( h)}= 9\pi[/tex]

[tex]\bullet \rightarrow \dfrac{{ (\pi )( h)}}{\pi } =\dfrac{ 9\pi}{\pi }[/tex]

[tex]\bullet \rightarrow \boxed{\bold{h= 9 \ \text{inches}}}[/tex]

Thus, the height of the party hat is 9 inches.

Answer: 22.50

Step-by-step explanation:

Answer:$127.50

Step-by-step explanation:

15 percent of 150 is $22.50 so subtract that $22.50 from $150

Answer:

$490.03

Step-by-step explanation:

($415.28)(0.18) = $74.75

$415.28 + $74.75 = $490.03

Answer:

d - 11*16

Step-by-step explanation:

Algebraic Expressions

We use algebraic expressions to model real-world situations and we must pay close attention to the writing of the problem to do it properly and accurately.

Let's build the expression in small steps:

11 times the quantity 16 = 11*16

That amount less than a number d. It suggests a subtraction:

d - 11*16

Answer:

142 l/hr

Step-by-step explanation:

Answer:142

Step-by-step explanation:

Answer:

1. A, 2. A , good luck!!!

Step-by-step explanation:

answer:

The answer is d

Step-by-step explanation:

Answer:

your answer is 588 square units

Step-by-step explanation:

i got it right on the test

Answer:

1. 3x + 5 + x + 3

2. 4x + 8

3. 4(x + 2)

Step-by-step explanation:

1. Write out the problem, break it down.

2. Combine like terms.

3. Factor.

Answer:   fist you could Write out the problem and then , break it down.

2. Combine it like terms.

3. And then the Factor.

Answer:

113

Step-by-step explanation:

The given shape has 6 angles so it's a hexagon and the sum of interior angles in a hexagon is = 720

To find the the value of x we need to add all given values up and subtract it from 720:

88 + 142 + 105 + 136 + 136 + x = 720

607 + x = 720 subtract 607 from both sides

x = 113

Answer: 1.6 km

Step-by-step explanation:

If they can replace 400 meters in 5 days, that means they can replace 80 meters in 1 day, (400/5). So in 20 days, they will do 20x80 = 1600 meters. Since 1000 meters make one km, 1600/1000 = 1.6 km in 20 days

Answer:Thats Just Notes To Right Down.

Step-by-step explanation:

The slope-intercept form is y=mx+b y = m x + b , where m m is the slope and b b is the y-intercept. Using the slope-intercept form, the slope is 45 4 5 . The equation of a perpendicular line to y=4x5+7 y = 4 x 5 + 7 must have a slope that is the negative reciprocal of the original slope.

Answer: C

Step-by-step explanation:

Answer:

37.5 percent

Step-by-step explanation:

Finding percent is simple. You want to find percent of the price drop so you subtract 50 from 80 and get 30. Once you get 30 you divide by 80 (your original price). Once you do this you will get 0.375. Multiply this by 100 to get your percent.

Answer:

$40.95

Step-by-step explanation:

Original price = $65.00

If the jacket is on sale for 40% off, then it is now 60% of the original price.

60% = 60/100 = 0.6

⇒ 60% of $65.00 = 0.6 × 65

                              = $39

If we have to pay 5% sales tax, then this means that the final price will be 105% of the sale price.

105% = 105/100 = 1.05

⇒ 105% of $39 = 1.05 × 39

                         = $40.95

Discount:-

[tex]\\ \rm\rightarrowtail 0.40(65)=26\$[/tex]

Now

So

Sales tax is 5%

Total price=39+0.05(39)=40.95$

Answer:

11

Step-by-step explanation:

3³ - (6 - 2)²

3³ - 4²

27 - 16

11

Answer:

Please mark as brainliest;)

Answer:

Where is the question mate ????

Answer:

question please .........

Answer:

0 is the last digit. Hope this helps

Answer:

a. y equals one third times x plus 10

= y = 1/3(x) + 10

Step-by-step explanation:

Let us represent:

Let the original final plan = x

Let the current flight plan = y

The initial time of departure = 4.00pm

Her flight was then delayed for 10 minutes

We are told in the question that:

The current flight plan allows her arrive at her destination three times faster.

This means y= (1/3)x

y = x/3

Hence the equation generated =

y = x/3 +10

y = 1/3(x) + 10

Answer:

y = 1/3x + 10

Step-by-step explanation:

Answer:

35

Step-by-step explanation:

x + 10 + 3x - 5 + x = 180

5x + 5 = 180

5x = 175

x = 35

Answer: $2.10

Step-by-step explanation: 22-15.70= 6.3

This means you spent $6.30 on pretzels. Divide 6.30 by 3 to find out how much each pretzel costs. You would get 2.1 (which is written as $2.10 in money).

Answer:

[tex]\huge\boxed{\sf 6x^2-x+16}[/tex]

Step-by-step explanation:

[tex]= (2x-3)(3x+4)\\\\Expand\\\\= 2x(3x+4)-3(3x+4)\\\\Distribute\\\\= 6x^2+8x-9x+16\\\\= 6x^2-x+16\\\\\rule[225]{225}{2}[/tex]

Answer:

6x²-x-12

Step-by-step explanation:

(2x-3)(3x+4)

2x(3x+4) -3(3x+4)

6x²+8x-9x-12

6x²-x-12

Answer:

=> 6 + x – y

Step-by-step explanation:

=> The trinomial of degree 1 = 6 + x – y

Answer:

above is the solution to the question hope it helps. dimensions are in cm, area is in cm^2