Answer:
14 grams
Step-by-step explanation:
20/100=x/70
70 * 20/100=x
14=x
If P=(-3,5) and Q=(1,9), find the midpoint of the segment PQ
Answer:
[tex](-1,7)[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Midpoint Formula: [tex](\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})[/tex]Step-by-step explanation:
Step 1: Define
Point P(-3, 5)
Point Q(1, 9)
Step 2: Find Midpoint
Simply plug in your coordinates into the midpoint formula to find midpoint
Substitute {MF]: [tex](\frac{-3+1}{2},\frac{5+9}{2})[/tex]Add: [tex](\frac{-2}{2},\frac{14}{2})[/tex]Divide: [tex](-1,7)[/tex]Help please please please
[tex]1/2=0.5\\5/0.5=10[/tex]
Write an equation of the line that passes through (7,10) and is perpendicular to the line y =1/2x-9.
An acid is prepared by mixing 400 mL of water and 100 mL of pure sulfuric acid. What is the
percentage by volume composition of sulfuric acid?
A. 15 %
B. 20%
C.25%
D.30%
ARE THESE CORRECT YES OR NO TYPE ONLY IF YOU KNOW THANKS I REALLY NEED THIS!
Answer:
yes I think im not an expert but i think
Step-by-step explanation:
Answer:
Yes, all of them are correct.
If x= −5, which equation is true?
a] 2x−4= −14
b] 3(4−x)=3
c] 2(x−4)= −14
d] 3(10−x)=21
Which of the following shows the correct solution steps and solution to
7x – 4 = –18?
A.
7
x
−
4
=
−
1
8
7
x
−
4
+
4
=
−
1
8
+
4
7
x
=
−
2
2
7
x
7
=
−
2
2
7
x
=
−
2
2
7
7x−4
7x−4+4
7x
7
7x
x
=−18
=−18+4
=−22
=
7
−22
=
7
−22
B.
7
x
−
4
=
−
1
8
7
x
−
4
+
4
=
−
1
8
+
4
7
x
=
−
1
4
7
x
−
7
=
−
1
4
−
7
x
=
2
7x−4
7x−4+4
7x
−7
7x
x
=−18
=−18+4
=−14
=
−7
−14
=2
C.
7
x
−
4
=
−
1
8
7
x
−
4
+
4
=
−
1
8
+
4
7
x
=
−
1
4
7
x
7
=
−
1
4
7
x
=
−
2
7x−4
7x−4+4
7x
7
7x
x
=−18
=−18+4
=−14
=
7
−14
=−2
D.
7
x
−
4
=
−
1
8
7
x
−
4
−
4
=
−
1
8
−
4
7
x
=
−
1
4
7
x
7
=
−
1
4
7
x
=
−
2
7x−4
7x−4−4
7x
7
7x
x
=−18
=−18−4
=−14
=
7
−14
=−2
Answer:
Simplify 7\times -47×−4 to -28−28.
-28=-18
−28=−18
2 Since -28=-18−28=−18 is false, there is no solution.
No Solution
the temperature at noon at an Antarctic weather center was –15 °C. At midnight it had fallen by 12 °C. What was the temperature at midnight?
Answer:
-27 °C
Step-by-step explanation:
-15 -12 = -27
start fraction 5.2 over 3.5 end fraction equals start fraction y over 7.5 end fraction
A. 7.25
B. 11.14
C. 5.05
D. 2.43
Answer:
A
jk its D hope this helps
Write an equation that represents the line. Use exact numbers
Answer:
y= 2/3x + 1.25
Step-by-step explanation:
I can't see the exact number but it's probably 1.25. Sorry if it's wrong :)
pls help because im awful at math
Answer:
8/4
Step-by-step explanation:
because 8 is x and x goes first and y is 4 and y goes last
hope this helps!
Jack’s car used 18 gallons of gasoline to go 468 miles. At that rate, how many gallons would be used to go 754 miles? Explain how you know.
Answer:
29 gallons.
Step-by-step explanation:
For every gallon, a total number of 468/18 miles = 26 miles could be travelled.
And hence, to travel 754 miles, a total of 754/26 gallons = 29 gallons would be needed.
Hope this helped!
What is the slope of the line? (Linear equations and slope quiz I-ready)
Answer: 2
Step-by-step explanation:
The slope of the linear graph in the question obtained using the ratio of the rise and run of the line is 2.
Recall :
Slope = Rise / Run
From the graph :
Rise = y2 - y1 = 5 - (-1) = 5 + 1 = 6
Run = x2 - x1 = 2 - (-1) = 2 + 1 = 3
The slope of the graph can be expressed thus :
Slope = Rise / Run = 6 /3 = 2Therefore, the slope of the line in the graph attached is 2
Learn more :https://brainly.com/question/18405415
For every | | followers Matthew has, Kevin has | |followers.
PLEASE HELP ILL MARK BRAINLEST
Answer:
For every 5 followers Mathew has, Kevin will have 10
Step-by-step explanation:
Answer:
For every 5 followers Matthew has, Kevin has 10 followers.
Step-by-step explanation:
Solve the following equation: -3 = 1 3/5 + m.
-2 3/5
-4 3/5
-4 2/5
-1 2/5
Answer:
-4 3/5
Step-by-step explanation:
I subtracted 1 3/5 from -3 and got -4 3/5. I also added 1 3/5 + -4 3/5 to check my work and it is correct.
Which sample size would give the
best estimate of the population
mean?
Answer choices:
18
30
45
60
Shade row 3 and column C.
Answer:
Shade in all of the boxes to the right of 3, and all of the boxes above the C.
What is the solution to the system of equations below?
y=-x+6 and y-x-6
O no solution
O infinitely many solutions
O (-18, 12)
O (18, 0)
Answer:
O (-18, 12)
Step-by-step explanation:
brainiest plz
Can someone help me fill in the ratio table please!!
Answer:
[tex]A[/tex] [tex]n[/tex] [tex]s[/tex] [tex]w[/tex] [tex]e[/tex] [tex]r[/tex] [tex]*[/tex] [tex]B[/tex] [tex]e[/tex] [tex]l[/tex] [tex]o[/tex] [tex]w[/tex]
Step-by-step explanation:
[tex]--------------------------------------------[/tex]
[tex]Orange[/tex] [tex]fabric[/tex] = [tex]\frac{1}{3}[/tex] [tex]\frac{2}{3}[/tex] [tex]\frac{3}{3}[/tex] [tex]\frac{4}{3}[/tex][tex]--------------------------------------------[/tex]
[tex]Yellow[/tex] [tex]fabric[/tex] = [tex]\frac{8}{3}[/tex] [tex]\frac{16}{3}[/tex] [tex]\frac{24}{3}[/tex] [tex]\frac{32}{3}[/tex][tex]--------------------------------------------[/tex]
Hope this helps! <3
[tex]--------------------------------------------[/tex]
A map of Utah has a scale of 1 cm: 30 mi. The border of Utah measures
about 3.7 cm. How long is the actual border of Utah and Wyoming? Show
your work to receive full credit
Answer:
The actual border of Utah and Wyoming is 111 miles long.
Step-by-step explanation:
We can use proportion to solve this!
[tex] \frac{1 \: cm}{30 \: mi} = \frac{3.7 \: cm}{x} \\ \\ \frac{111}{1} = \frac{1x}{1} \\ \\ 111 = x[/tex]
67°
15
h
b
What is the area
Answer:
1005
Step-by-step explanation:
Assuming this is a rectangle, square, or other 4 sided figure, the ft^2 would be 1005
Been stuck on this for hours, it's the Law of Sines. 25 POINTS!!
Answer:
Step-by-step explanation:
(Sin27) / 11 = (sin x) / 15
cross multiply
15 sin27 = 11 sin x
keep in calculator as you divide 15sin27 by 11.
sin x = .6190779542
do sin ^ -1 (.6190779542) (It’s a key on the calculator.)
x = 38.25*
9514 1404 393
Answer:
38.2°
Step-by-step explanation:
According to the equation you are give, ...
sin(x)/15 = sin(27°)/11
Multiplying by 15 gives you ...
sin(x) = 15·sin(27°)/11 ≈ 0.619078
The inverse sine function is used to find the angle x. It may show as sin⁻¹ on your calculator.
x = arcsin(0.619078)
x ≈ 38.2°
_____
Additional comment
x is shown in the figure as an acute angle, so that is the value we have chosen. The other angle that has sin(x) = 0.619078 is the supplement of this, or 141.8°. The two solutions are shown in the 2nd and 3rd attachments.
The total surface area of a cone whose radius is 2 r and slant height 2l is
(A) 2πr (l + r)
(B) πr (l + 4 r )
(C) πr (l + r)
(D) 2πrl
please answer urgent
Answer:
[tex]A=4\pi r(l+r)[/tex]
Step-by-step explanation:
The total surface area of a cone is given by :
[tex]A=\pi rl+\pi r^2\\\\=\pi r(l+r)[/tex]
Put r = 2r and l = 2l in the above formula
[tex]A=\pi \times 2r(2l+2r)\\\\A=2\pi r(2l+2r)\\\\=2\pi r \times 2(l+r)\\\\=4\pi r(l+r)[/tex]
Hence, the total surface area of the cone is [tex]4\pi r(l+r)[/tex].
Will give brainliest, Please explain how you got your answer!
Write an equivalent expression.
(x + 7) + 3y
I NEED HELP ASAP!!!!
I WILL GIVE A BRAINELEST
Answer:
x=4
Step-by-step explanation:
A System of Linear Equations consist of.....
O three or more lines.
O at least one line.
O at least two lines.
O more than two lines.
Answer:
B. At least one line
Step-by-step explanation:
Two lines can overlap on the coordinate plane, so it appears to be one line.
Type the correct answer in each box.
If cos -105º = -0.26 and csc -105º = -1.03, then cos 105º = ? and csc 105º = ?
Answer:
[tex]\cos(105^\circ)\approx-0.26\text{ and } \csc(105^\circ)\approx1.03[/tex]
Step-by-step explanation:
We are given that:
[tex]\cos(-105^\circ)\approx-0.26\text{ and } \csc(-105^\circ)\approx-1.03[/tex]
And we want to find:
[tex]\cos(105^\circ)\text{ and } \csc(105^\circ)[/tex]
Part A)
Remember that cosine (and secant) is an even function. By definition, this means that:
[tex]\cos(\theta^\circ)=\cos(-\theta^\circ)[/tex]
Therefore, since we know that cos(-105°) is about -0.26, it follows from the definition that:
[tex]\cos(-105^\circ)=\cos(105^\circ)\approx-0.26[/tex]
Part B)
Remember that cosecant (and sine) is an odd function. By definition, this means that:
[tex]\csc(-\theta^\circ)=-\csc(\theta^\circ)[/tex]
We know that csc(-105°) is about -1.03.
By the above definition, we can rewrite csc(105°) as csc(-(-105°)) or -csc(-105°).
Hence, it follows that:
[tex]\csc(105^\circ)=-\csc(-105^\circ)=-(-1.03)=1.03[/tex]
50 points please help me with this. Dont spam random things. If your smart answer this please
Answer:
top one
Step-by-step explanation:
Answer: It's B.
Step-by-step explanation: this is 1st grade math. good luck!
You are selling items at the football game to raise money for the school's athletic teams. You
sell pizza for $5 per slice and drinks for $3 per cup. Your sales totaled $1020. If you sold 84
slices of pizza, how many drinks did you sell?
Need help asapp
Answer:
200 cups of drinks sold
Answer:
200 cups
Step-by-step explanation:
Edgar is scuba diving 50 feet below the water. He is swimming to the surface at a rate of 3 feet per second. Write an equation to represent his depth, d, after s seconds.
Fill in the blank
d = __ s + __
(also to understand better we are doing the equation y = __ x + __ )
Answer:
d= 3s+50
Step-by-step explanation:
Hope this helped you!! Give brainliest..