Mathematics High School

Multiply the binomials:
(3x + 4)(5x-2)
A. 15x^2 + 20x-8
B. 15x^2 + 14x + 8
C. 15x^2- 14x-8
D. 15x^2+ 14X-8

Answers

Answer 1

Answer:

15x^2 + 14x - 8

Step-by-step explanation:

Use the FOIL Method.

(3x + 4) (5x - 2)

1. First: 15x^2

2. Outside: -6x

3. Inside: 20x

4. Last: -8

5. Put Together: 15x^2 - 6x + 20x - 8

6. Simplify: 15x^2 + 14x - 8

Related Questions

Guys I’ll give u the brainliest answer I just need the answer pls hurry!!!!

Answers

Answer:

Gartner = average of 25

Water = average of 31.5

(both have a variation of 20)

Step-by-step explanation:

Write the equation for the line through the following cities. 16.Ankara and Tbilisi ______________________________________ 17.London and Warsaw ______________________________________ 18.Amsterdam and Minsk ______________________________________ 19.Oslo and Rome ______________________________________ 20.Bern and Riga ______________________________________ 21.Tallinn and Vilnius ______________________________________ 22.Madrid and Sofia __________

Answers

Answer:

See explanation

Step-by-step explanation:

The question is incomplete, as the graph or points of each city are not given.

So, I will provide a general explanation.

To calculate the equation of line through two points;

Start by writing out the coordinates of the two points.

For instance:

[tex]London = (4,6)[/tex]

[tex]Warsaw = (20,10)[/tex]

This points will be represented as:

[tex](x_1,y_1) = (4,6)[/tex]

[tex](x_2,y_2) = (20,10)[/tex]

Calculate the slope (m)

[tex]m = \frac{y_2 - y_1}{x_2 -x_1}[/tex]

[tex]m = \frac{10 - 6}{20 - 4}[/tex]

[tex]m = \frac{4}{16}[/tex]

Simplify

[tex]m = \frac{1}{4}[/tex]

The equation is then calculated as:

[tex]y = m(x - x_1) + y_1[/tex]

This gives:

[tex]y = \frac{1}{4}(x - 4) + 6[/tex]

Open bracket

[tex]y = \frac{1}{4}x - 1 + 6[/tex]

[tex]y = \frac{1}{4}x +5[/tex]

Apply the above steps in the original question

PLS HELP i have to finish this tonight

Answers

Answer:

D.480 Ft/S

Step-by-step explanation:

um, Just ask your teacher if you don't understand:P

There are 95 candies in the dish.19 of the candies are chocolate. What percent of the candies are left

Answers

Answer:

80%

Step-by-step explanation:

20% of the candies are chocolate, leaving the rest of the 80%

What's the slope of this line? Someone plz answer plz.

Answers

Answer:

0.5

Step-by-step explanation:

Answer:

[tex] \frac{1}{2}x + 5[/tex]

simplify 3/36 will choose brainliest

Answers

Answer:

3/36 simplified is 1/12

Hope this helps!


Simplify:

- 5 1/4 -( -7 1/2)

Answers

Answer:

-5 1/4-(-7 1/2 is simplified to 9/4

Step-by-step explanation:

-5 1/4 is simplified to -21/4  -(-7 1/2

-7 1/2 is simplified to -15/2 and two negatives make a positive.

so the equation now becomes

-21/4+15/2

15/2 times 2 is 30/4

-21/4+30/4 is 9/4

The answer is 9/4

100 POINTS!!!

A triangle with vertices at A(20, -30), B(10,-15), and C(5,-20) has been dilated with a center of dilation at the origin.
The image of B, point B', has the coordinates (2, -3). What is the scale factor of the dilation?
05
5
10

Answers

Answer:

5

Step-by-step explanation:

Find the area. THIS IS REALLY IMPORTANT. NEED ASAP!!

Answers

Answer:

1246cm

Step-by-step explanation:

26*10=260

29*34=986

986+260=1246

The area is 1246 centimeters

Binomial Coefficients (30pts) 1. Write (a + b)^2 as a polynomial in standard form. Show work (FOIL/distributive property).

Answers

Answer:

[tex]a^2 + 2ab + b^2[/tex]

Step-by-step explanation:

Given

[tex](a + b)^2[/tex]

Required

Express as a standard polynomial

We have:

[tex](a + b)^2[/tex]

Rewrite as:

[tex](a + b)(a + b)[/tex]

Open bracket

[tex]a^2 + ab + ab + b^2[/tex]

Add like terms

[tex]a^2 + 2ab + b^2[/tex]

PLEASE HELP WHAT IS THE DISTANCE AND DISPLACEMENT WILL MARK U BRAINLIEST

Answers

Answer:i do not know

Step-by-step explanation:

i rlly need help on this question and you won’t help

Answers

Answer:

lol wheres the question

Step-by-step explanation:

Where is the question at?

Given y varies inversely as x, and y = 5 when x = 9. Write the inverse function

Answers

Answer:

y = 45/x

Step-by-step explanation:

Given y varies inversely as x, then;

y = k/x

If y = 5 when x = 9

5 = k/9

k = 5*9

k = 45

Substitute into the formula above;

y = k/x

y = 45/x

Hence the required inverse function is y = 45/x

Simplify: xy(x+5y)(x+2y)

Answers

Answer:

x3y+7x2y2+10xy3

Step-by-step explanation:

A furniture store sells kits that customers use to build cabinets. Each kit contains 18 screws and a set number of boards.

Jarred buys 6 of these kits and has a total of 192 screws and boards. The equation shown represents this situation.

6(x + 18) = 192

What does the variable x represent in Jarred's equation?

A)the number of screws in all 6 kits
B)the number of screws in one kit
C)the number of boards in all 6 kits
D)the number of boards in one kit

Answers

Answer: C)the number of boards in all 6 kits

Step-by-step explanation: A) and B) wouldn’t make sense to the given question (process of elimination)

So C) or D) welp D is only talking about one kit when there’s 6 kits so D cannot be the answer

So the answer is C)

Please mark me as brainliest

Have a nice day!

Answer:

C or D cause A B doesnt make sence its d

Step-by-step explanation:

a tree cast a 25 foot shadow on a sunny day, if the angle of elevation from the tip of the shadow to the top of the top of the tree is 32 degrees, what is the heights of the tree to the nearest tenth of a foot?

Answers

Answer:

Tree height is 15.6 ft

Step-by-step explanation:

Picture a triangle with horizontal side 25 ft and angle 32 degrees on the left.  Then the following is true:

                                      x

tan 32 = 0.625 = ---------------------       or   x = (0.625)(25 ft) = 15.6 ft

                                    25 ft        

Please answer correctly !!!!! Will mark Brianliest !!!!!!!!!!!!!!

Answers

Answer:

Angle 4 is ∠A

Step-by-step explanation:

Cos(A) = adjacent / hypotenuse

=> Angle 1: Cos(1) = 40 / 41, or 0.98 (so this is not ∠A)

=> Angle 2: Cos(2) = 9 / 41 or 0.22 (This isn't ∠A either)

=> Angel 3: Cos(3) = 24 / 25 or 0.96 (Not ∠A)

=> Angel 4: Cos(4) = 7 / 25 or 0.28 (This is Angle A, since Cos(A) = 0.28)

Therefore; Angle 4 is ∠A

Hope this helps!

Answer:

Can't type the Full solution

I'll solve for the triangle with angles 1 and 2

You can go for the rest.

CosA = 0.28

Taking the cos-¹(0.28) to determine its Magnitude

A=73.74°

Now

We can use sine Rule to get the values of each of the other angles in the triangle

For the first triangle

Applying sine rule

What basically happens in the rule is... Each side divided by the angle opposite it.

Look below

The angle opposite 40cm is angle '2' and the angle opposite 41cm is 90°

We have this sine rule when all three sides are given with ONE ANGLE(90° is the given angle in this case)

So

Each side over the angle opposite it

We go!!

Let's call angle "2" an alphabet. Say Q

41/sin90 = 40/SinQ

SinQ = 40sin90/41

Recall sin90=1

SinQ = 40/41

Q= Sin-¹(40/41)

Q= 77.32°

so angle 2 is 77.32°

Now apply this to get others

Angle '1' should be 12.68°

Angle "3" should be 16.26°

Angle "4" should be 73.74°

Therefore

conclusion

Angle "4" is same as A. That's the angle we looking for

Option 4 IS CORRECT!!

4x-3=2x+7 please help shdjdjsjsjsndjxj

Answers

Answer:

x=5

Step-by-step explanation:

Step 1: Subtract 2x from both sides.

4x−3−2x=2x+7−2x

2x−3=7

Step 2: Add 3 to both sides.

2x−3+3=7+3

2x=10

Step 3: Divide both sides by 2.

x=5

And theres our answer.

Hope this helped! :)

Answer:

x=5

Step-by-step explanation:

4x-3=2x+7

4x-2x= 7 +3

2x=10

2x/2=10/2

x=5

PLEASE HELP WILL MARK BRAINLIEST

Answers

Answer:

[tex]1) B[/tex]

[tex]2)\ B[/tex]

[tex]3)\ B[/tex]

[tex]4)\ C[/tex]

Step-by-step explanation:

1)

Let's use the Pythagorean Theorem:

[tex]X^2 + 13^2 = 21^2[/tex]

[tex]X^2 + 169 = 441[/tex]

[tex]X^2 = 272[/tex]

[tex]X= \sqrt{272} = 4\sqrt{17} = 16.5[/tex]

2)

Let's use the Pythagorean Theorem:

[tex]16^2 + 28^2 = x^2[/tex]

[tex]x^2 = 1040[/tex]

[tex]x = \sqrt{1040} = 4\sqrt{65} = 32.2[/tex]

3)

Let's use the Pythagorean Theorem:

[tex]7^2 + 24^2 = 25^2[/tex]

As this equation is correct, these three lengths could be used in a right triangle.

4)

Let's use the Pythagorean Theorem:

[tex]7^2 + 24^2 = 25^2[/tex]

As this equation is correct, these three lengths could be used in a right triangle.


Show by a rough sketch that there are four points which are at a distance of 2cm from the
given line AB and 3cm from the point A.

​

Answers

Answer:

.........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

Step-by-step explanation:



Kaia's mom is having triplets. Each baby could be either male or female

Which outcome would be included in the compound event more than one

male"?

First Second Third

baby baby baby

M

Sample space

outcomes

MMM

F

MMF

MEM



A. MFM

B. FFM

C. MFF

D. FMF

Answers

Answer:

MMM

Step-by-step explanation:

Given

See attachment for elements of the sample space (in a probability tree)

Required

Which of MMM, FFM, MFF, FMF represents more than one male?

From the question, we understand that:

[tex]M \to Male[/tex]

[tex]F \to Female[/tex]

So, for an event to represent more than 1 male, there must be an occurrence of at least 2 M (i.e 2 M or 3 M)

From the given options, only MMM has more than 1 M.

Hence, MMM represents more than one Male

Doris bought 15 yards of fabric for
$7. How much do 6 yards of the same
fabric cost?

Answers

Answer :42 dollars
6x7 dollars is 42
Uh I think it’s 42$ I’m not sure doe

Simplifique a expressão: 5 √2^3

Answers

Answer:

10√2

Step-by-step explanation:

5√2³ = 5√8 = 5√(2 x 4) = (2 x 5)√2 = 10√2

х
110°
70°
у
x = [? ]

Answers

Answer:

I believe it's 180 or 90

180?

what is the percent of increase from 600,000 to 900,000?

Answers

Answer: 50%

Step-by-step explanation:

Graph to solve the system:
y= 2x- 1 and y = -x + 5
At what x-value are the equations equal?

Answers

the equation both equal x=0

Answer:

Step-by-step explanation:

please help me


i’m stuck

Answers

Answer:

14 mins

Safest answer and may be correct

Find the area of this circle. Use 3 for .
A = tar2
4 cm
[?] cm2

Answers

Answer:

48 is the area

Step-by-step explanation:

A=4squared=16x3=48

Pi is 3.14 but in the question it states just a 3.

Find x for this problem
11
11
10

Answers

Step-by-step explanation:

bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb

Neva is training for a race. This week, she bikes 5.5 times as far as she runs. Her total distance running and biking this week is 26 mi. How far does Neva run this week?

Answers

Answer:

Run = 4 miles

Biked = 22 miles

Step-by-step explanation:

Given :

Let :

Number of miles ran = x

Number of miles biked = 5.5x

Total run and bike distance = 26 miles

Thus ;

x + 5.5x = 26

6.5x = 26

x = 26/6.5

x = 4

Total miles run ; x = 4 miles

Total miles biked, 5.5x = 5.5*4 = 22 miles

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