In triangle ABC, what is the value of x?

Question

Daniel expanded the expression as shown. What errors did he make? Select three options.

[tex]-2(-8x-4y+3/4)=-10x-8y-1 \frac{1}{4}[/tex]

A. The first term should be positive.

B. The second term should be positive.

C. The last term should be -1 1/2, not -1 1/4.

D. He divided -8 by -2 instead of multiplying -8 by -2.

E. He did not simplify the expression completely.

Answer:

Daniel's errors are (a), (b) and (c)

Step-by-step explanation:

To do this, we only need to solve the expression on the left.

So, we have:

[tex]-2(-8x-4y+3/4)=[/tex]

Open bracket

[tex]-2(-8x-4y+3/4)=-2 * -8x -2 * -4y - 2 * 3/4[/tex]

[tex]-2(-8x-4y+3/4)=16x + 8y - \frac{2 * 3}{4}[/tex]

[tex]-2(-8x-4y+3/4)=16x + 8y - \frac{6}{4}[/tex]

[tex]-2(-8x-4y+3/4)=16x + 8y - 1\frac{1}{2}[/tex]

From the expression, we can see that:

So, Daniel's errors are (a), (b) and (c)

Answer:

The sale price of the shoes is $55.96

Step-by-step explanation:

1: 30% of $79.95 is 23.985.

Which would round to $23.99.

Then subtract 23.99 from 79.95.

79.95-23.99= 55.96

Answer:

B I think hope it is right

Answer:

111°

Step-by-step explanation:

angles around a point = 360

360-138=222

angles at the centre is double the circumference

222÷2

= 111

Answer:For the cube root function f(x)=3√x f ( x ) = x 3 , the domain and range include all real numbers. Note that there is no problem taking a cube root, or any odd-integer root, of a negative number, and the resulting output is negative (it is an odd function).

Step-by-step explanation:

The domain and range for all cube root functions is set of all real numbers.

The domain and range are defined for a relation and they are the sets of all the x-coordinates and all the y-coordinates of ordered pairs respectively. For example, if the relation is, R = {(1, 2), (2, 2), (3, 3), (4, 3)}, then:

Domain = the set of all x-coordinates = {1, 2, 3, 4}

Range = the set of all y-coordinates = {2, 3}

The domain of a cube root function f (x) = ∛x is the set of all real numbers (R) because it can be calculated for all values of x. Its range is also equal to the set of all real numbers because it will result in all real numbers as y-values.

The range of a cube root function is all real numbers except for 0.

Therefore, the domain and range for all cube root functions is set of all real numbers.

To learn more about the domain and range visit:

brainly.com/question/28135761.

#SPJ2

Answer:

x

−

y

+

4

=

8

6

x

+

2

y

=

8

x

+

6

y

=

5

Step-by-step explanation:

Answer:

The answer is D

Step-by-step explanation:

We want to see which of the given values is a solution of the inequality:

x < 4

The correct option is A, x = 3.

So the inequality:

x < 4

This means that the variable must be a number smaller than 4.

Then we just need to select the option that is smaller than 4, the only option that meets this requirement is option A, x = 3

Also, as you can see in the number line, the only number that is in the shaded part is x = 3 (from the ones in the options).

If you want to learn more about inequalities, you can read:

https://brainly.com/question/18881247

Answer:

62.36

Step-by-step explanation:

hope it is helpful for you mark me brainliest

Answer:

Positive

Step-by-step explanation:

Answer:

POSITIVE

Step-by-step explanation:

It's positive because the slope is rising like this /

If it was negative it would be declining like this \

hope that makes sense but I'm 1000% sure it's positive

Answer:

Step-by-step explanation:

Natasha use the distance formula

d = sq rt [ x2 - x1)^2 + (y2-y1)^2 ]

d = sq rt [ 2 - (-5) ) ^2  + (-3 - 4)^2 ]

d = sq rt [ 2 + 5 ) ^2 + -7^2 ]

d = sq rt [ 7^2 + - 7^2 ]

d = sq rt [ 49 +49]

d = sq rt { 98]

d = [tex]\sqrt{98}[/tex]

d = [tex]\sqrt{7*7*2}[/tex]

d = 7[tex]\sqrt{2}[/tex]

leave it in that from b/c the square root is in exact form  :)

Answer:

12

Step-by-step explanation:

Multiply both sides of the equation by 8/5.

4x-16=32

Move 16 to the other side

4x=32+16

add numbers on the right side

4x=48

divide both sides by 4

x=12

Answer:

5.65 hours

Step-by-step explanation:

Given: Initial number of bacteria = 1000

N=1000(2)

To find: Time taken to: increase to 50,000

Solution: N=1000(2)

Answer = 5.65 hours

_ = symbol after the two in the brackets that is high up and smaller.

3 squared.

Explanation: Because it's correct.

Answer:

i did 3^2 and the answer would be 19 for that.

Step-by-step explanation:

3^2 + (5 − 2) ⋅ 4 − 6 over 3

9 + 3 ⋅ 4 - 6 over 3

9 + 12 - 6 over 3

21 - 6 over 3 (which equals 2)

is 19 :)

Answer: 0.5 = 111

Step-by-step explanation:

Answer:

Step-by-step explanation:69696969699696969696969696969699696965iu436745

Answer:

∠1 = 66°

∠2 = 24°

∠3 = 24°

∠4 = 90°

Step-by-step explanation:

∠1 = 90 - 24 = 66°

∠2 = 24°

∠3 = 24° because segment DB bisects ∠ABC

∠4 = 90° because it is a right angle

the answer is 4.75

Step-by-step explanation:

The mean of a set of numbers, sometimes simply called the average , is the sum of the data divided by the total number of data. Example 1 : ... There are 8 numbers in the set. Add them all, and then divide by 8 . so just add all you numbers and divide it by 8. simple

Answer:

Step-by-step explanation:

f(8) = (8)^2 - 4 = 64 - 4 = 60

Answer:

9 cans

Step-by-step explanation:

Since there is 3 balls per can and she has 27 in total, you can simply do 27/3 to get 9.

Answer:

Step-by-step explanation:

Given:

Required equation:

Solve for x:

After 3 days bacteria numbers will reach 400000

Answer:

It is 10

Step-by-step explanation:

Answer:

Step-by-step explanation:

2/5 + 3/7 + 1/4 = 28/140 + 60/140 + 35/140 = 123/140

Answer:

This is the answer in dollar

35x+9<=310

Answer:

choice 4) x = 27, ∠FDG = 62°, ∠GOF = 118°

Step-by-step explanation:

2x + 8 + 4x + 10 = 180°

6x + 18 = 180

6x = 162

x = 27

∠FDG = 2(27) + 8 = 62°

∠GOF = 4(27) + 10 = 118°

Answer:

|x|>3

Step-by-step explanation:

Thanks for da points hope ya pass yur class

Answer:

4

Step-by-step explanation:

I saw karma so i came as fast as I could- welp anyways

Lets test the first equation and coordinate #1 first, 3x-2y=12, and (10,9).

Here we can substitute x as 10 and y as 9, and solve the equation to see if 3(10)-2(9) equals 12 or not.

30-18=12, yep

now lets test the second coordinate, (0, -6). Substitute x as 0 and y as -6, and solve the equation.

3(0)-2(-6)=12

0+12=12, yep

So I definitely works

For II, lets do the same thing

(10, 9) -- 9=3/2*10-6

9=15-6, works

(0, -6) — -6= 3/2*0-6

-6=0-6, also works

So uh therefore I and II both work you see what I mean-

i apologize in advance if i made you more confused than you already are-

Answer:36 in

Step-by-step explanation:

The formula for circumference is: C = 2πr

π = 3.14

r = radius.

The Circumference given to us is 72π. Plug in 72π for C

72π = 2πr

Isolate the variable, r. Divide 2 and π from both sides

(72π)/2π = (2πr)/2π

r = (72π)/2π

r = 36

36

Answer: 72

Step-by-step explanation:

since the formula of circumference is C= Pi times the diameter, In some cases when they don't say what Pi is same thing here. So, you would put the diameter and the pi sign next to each other. So 72 is the diameter.

Answer: (a+a)-10

Step-by-step explanation: I think this works bcuz it's equivalent?