Simplify each expression by combining like terms.
7a - 6 + 8a ​

Answer:

I think it is B

Step-by-step explanation:

Hope this helped have an amazing day!

Answer:

x=30

y=4

Step-by-step explanation:

Since there is an equilateral triangle, those angles =60°, and all sides to that triangle are equal.

You can determine y by looking at the congruent lines on the second triangle. In this triangle, we see that two sides, one of which is a side to the equilateral triangle, are equal to 20. Because one of these sides is a side to the equilateral, we know that all sides of the equilateral triangle are equal to 20, so using simple algebra you can determine that y=4.

To solve for x is a little more difficult. In the equilateral triangle, we know that all angles =60°, therefore we can solve for two angles to use to solve for x. We can solve for the obtuse angle by subtracting 60 from 180=120. then we can solve for the next angle that is next to the equilateral triangle because these two make a right angle so 90-60=30. Now you add the angles you just solved for, subtract that sum from 180, and you get x.

120+30=150

180-150=30

x=30

Answer:

4x-6+5x+1

9x-5

Step-by-step explanation:

Answer:

9x-5

Step-by-step explanation:

like terms are added together, in this case, x

Answer:

80 / 5 = 40 / 5 + 40 / 5 = 10 + 6 = 16

Step-by-step explanation:

80 / 5 = 16

__ / 5 + __ / 5

You can do 80 / 2 to fill in those two blanks because the answer needs to equal the same as 80 / 5

80 / 2 = 40

40 / 5 + 40 / 5

8 + 8 = 16

the third blank needs to also equal 16. So you can do 16 - 6 to know what fills in the blank.

16-6

10

10+6 = 16

The last blank must equal the same as all the other equations so 16 would fill it.

If you need further help, don't be afraid to reach out with any questions. I hope this helps!

Answer:

80/5= 50/5 + 30/5= 10 + 6= 16

Answer:

Categorical

Step-by-step explanation:

Answer:

There is really no answer to this because this is the furtherest you can go to simplify this expression. I can help solve it if you give me more information, or you tell me what the value of a and b is so I can solve it.

Thanks!

Step-by-step explanation:

fihdjshshsjsbshdhddjdhdndjdbdhdb jseheidbdhdhdbehdndndnsjdnsjdndndjsjdndhdh sorry

The coordinates of F(x,y) is (5,-4) with midpoint of EF is M(1,-1)

What is midpoint of line segment?

The midpoint divides the line segment into two equal parts. As the number line progresses, the leftmost numbers become smaller, and the rightmost numbers become larger. Adding, subtracting, and multiplying can also be done using a number line like for addition move towards right and for subtraction move towards left.

Here, the mid point of line EF is M with coordinates (1,-1) with coordinates  of E(-3,2) therefore, using mid point formula to find coordinates of F(x,y)

[tex]\begin{aligned}\frac{-3+x}{2}&=1\\x&=2+3\\&=5\end{aligned}[/tex]

and for y coordinates of F :

[tex]\begin{aligned}\frac{2+y}{2}&=-1\\y&=-2-2\\&=-4\end{aligned}[/tex]

Therefore, the coordinates of F(x,y) is (5,-4) with midpoint of EF is M(1,-1)

Read more about midpoint at:

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Answer:

21

Step-by-step explanation:

Answer:

a T-shirt costs £5

a hat costs £2

Step-by-step explanation:

Suppose

A T-shirt=x

A Hat=y

So the equation is

8x+y=42

3x+y=17

So

8x+y=42

3x+y=17

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

5x=25

x=5

So a T-shirt costs £5

3.5+y=17

15+y=17

y=2

So a hat costs £2

Answer:

t-shirt: £5

hat: £2

Step-by-step explanation:

Please see the attached picture for the full solution.

Answer:

7:47

Step-by-step explanation:

Here are two ways of solving this:

The video will be half the time of 15:34, so you need to divide the time 15:34 by 2.

Method 1)

Use the tip. The video is 15 minutes and 34 seconds long.

Convert minutes to seconds: 15 * 60 = 900

Add 34 seconds to the 15 minutes: 900 seconds + 34 seconds = 934 seconds

The video is 934 seconds long.

Divide the total seconds by 2: 934/2 = 467

467 seconds = 420 seconds + 47 seconds = 7 minutes and 47 seconds

Answer: 7:47

Method 2)

Divide the minutes by 2 and divide the seconds by 2.

15 minutes and 34 seconds.

Divide minutes by 2: 15/2 = 7.5

Divide seconds by 2: 34/2 = 17

Now we need to add 7.5 minutes and 34 seconds.

0.5 minutes is half a minute, so it's 30 seconds.

7.5 minutes + 17 seconds =

= 7 minutes + 0.5 minute + 17 seconds

= 7 minutes + 30 seconds + 17 seconds

= 7 minutes + 47 seconds

= 7:47

Answer: 7:47

Answer: So the star equals 4 and the triangle equals 1

Step-by-step explanation:

Answer:

the answer is 36

Step-by-step explanation:

because the bottom is going up by 9 and the top is going up by ones

Answer:

36

Step-by-step explanation:

Just do your 9's time tables

Answer:

3

Step-by-step explanation:

5-2x3+4

Answer:

i think B... don't take my word though im not 100% cause it seems way too obvious on what the answer is lol

The measurement shows an appropriate level of precision for the scale is 140.5 pounds.

Place value, which is related to a digit's location in a number, is the amount that each digit is worth.

The scale measures weight to the nearest 0.5 pounds. This means that the scale can accurately measure weights that end in 0.5 or 0, and it rounds other weights to the nearest 0.5.

Among the given options, the weight that shows an appropriate level of precision for the scale is option B, 140.5 pounds.

This weight can be accurately measured by the scale and is reported to the nearest 0.5 pounds.

Option A, 140 pounds, may be rounded up or down depending on the actual weight and may not be an accurate measurement.

Option C, 140.75 pounds, is too precise for the scale to measure accurately to the nearest 0.5 pounds.

Option D, 141 pounds, is rounded up from 140.5 pounds and may not be an accurate measurement for the scale.

Therefore, 140.5 pounds.

To learn more about the place value;

https://brainly.com/question/27734142

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Answer:

If each pound costs $5.46, then

p

pounds can be multiplied to 5.46 to find the costs of different amounts of lithium.

Total cost: C

5.46

p

=

C

Step-by-step explanation:

Answer:

14x+37=4x

Step-by-step explanation:

Answer:

10.60 inches

Step-by-step explanation:

18.45

-7.85

_____

10.60 inches

Answer: 165.78 < μ < 180.22

Step-by-step explanation: Confidence Interval of a mean is a method to estimate the true population mean, i.e., we can get an interval where the true mean exists.

A confidence interval is calculated as

x ± [tex]z\frac{\sigma}{\sqrt{n} }[/tex]

z is z-score for 99% confidence, which is: z = 2.58

Then, the estimate is

173 ± [tex]2.58\frac{28}{\sqrt{100} }[/tex]

173 ± 2.58*2.8

173 ± 7.224

lower limit: 173 - 7.224 = 165.78

upper limit: 173 + 7.224 = 180.22

The 99% confidence interval of the mean is between 165.78 and 180.22 and it means that the true mean of this population is between those numbers with 99% of confidence.

Answer:

Yep! That looks right!

Step-by-step explanation:

Answer:

9+12=21

21+2=33

23+3=26

Step-by-step explanation:

the answer is 7

Answer:

38cm

Step-by-step explanation:

Using the Pythagorean Theorem, it is found that the size of the monitor is of 38 centimetres.

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

In a right triangle with legs [tex]l_1[/tex] and [tex]l_2[/tex] and hypotenuse h, these measures are related by the Pythagorean Theorem, given by:

[tex]h^2 = l_1^2 + l_2^2[/tex]

In this problem:

[tex]s^2 = l^2 + w^2[/tex]

[tex]s^2 = 24^2 + 30^2[/tex]

[tex]s = \sqrt{24^2 + 30^2}[/tex]

[tex]s = 38[/tex]

The size of the monitor is of 38 centimetres.

A similar problem is given at https://brainly.com/question/21691542

Answer:

0.75

Step-by-step explanation:

Answer: 36 = dividend

48 = divisor or if ur doing other way 0.75

Step-by-step explanation:

Answer:

Nvm

Step-by-step explanation:

Johns boat was 30 miles away. It traveled 20 miles in 5 hours (50-30 = 20)

20/5 = 4

It traveled at 4 miles per hour.

The equation for Roberta’s boat multiplied 5 by x( number of hours) so this means her boat is traveling at 5 miles per hour.

Then 25 gets added at the end, this means her boat was 25 miles away at the beginning.

Johns boat was further away at the beginning and Robertas boat is traveling faster.

Answer:

It’s the third option

Step-by-step explanation:

They preserved the angles

Answer:

It can be a rigid or a nonrigid transformation depending on whether the corresponding side lengths have the same measures.

Step-by-step explanation:

edge 2020

Step-by-step explanation:

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