Use Substitution to solve the following System of Equations.
y = 2x - 4
y= 12 +3
Answers
Answer:
x = 9.5
this should be the right answer if the same one you had to solve.
Step-by-step explanation:
y = 2x - 4
y = 12 + 3 combine them
2x - 4 = 12 + 3
+4 +4 The 4's cancel each other out
2x = 12 + 7 Add then divide
2x = 19
2x = 19
---- ----
19 19
x = 9.5
Related Questions
Which one? It’s either simplify or no simplify
Answers
Answer:
simplify
Step-by-step explanation:
pls help! whats the area of the sector!
Answers
Answer:
Step-by-step explanation:
[tex]\frac{a}{\pi r^2}=\frac{\theta }{360^o}\\ \\ a=\frac{\pi r^2 \theta }{360^o}\\ \\ r=36^o,\ \theta =80^o\\ \\ a=288\pi cm^2[/tex]
Calculate the value of p and the value of q
Answers
Answer:
q= 20 p= 56
Step-by-step explanation:
A angle is also 62°
Answer:
q = 20 degrees
p = 59 degrees
Step-by-step explanation:
to find q, find all the other interior angles within that shape and subtract it from 360
angle E = 180 - 62 = 118
angle b = 90
angle c = 132
360 - (118 + 90 + 132) = 20
angle q = 20 degrees
to find p, add all the other interior angles within that shape and subtract it from 180
angle e = 62 degrees
angle a and b are the same so, take 62 and subtract it from 180 then divide the answer by 2
180 - 62 = 118
118 / 2 = 59
angle a = 59 degrees
angle p = 59 degrees
Need help ASAP really lost
Answers
Answer:63
Step-by-step explanation:
CAN YOU SEE THIS AND IF SO IS IT THE RIGHT ANSWER? REWARD BRAINLIEST
Answers
Answer: A I think
Step-by-step explanation:
Answer: LOL its D
Step-by-step explanation:
The radius of a circle is increased by 3 in., which increases the area by 100 in. Find the radius of the original circle. Round to the nearest hundredth.
Answers
Answer:
3.81 inches
Step-by-step explanation:
πr² + 100 = π(r+3)²
divide by π and simplify:
r² + (100/π) = r² + 6r + 9
100/π = r² + 6r + 9
31.8309886184 - 9 = r² +6r
r² = 6r - 22.8309886184
0 = 6r - 22.8309886184
22.8309886184 = 6r
divide by 6:
3.80516476973 ≈ 3.81 inches
Which expressions are equivalent to the one below? Check all that apply. 49^x
Answers
Answer:
A,D,F
Step-by-step explanation:
Answer:
7^x•7^x, (7•7)^x, 7^2x
Step-by-step explanation:
Just took it, the other one is wrong
1 day= ____________ seconds
Please show the work!!
Answers
Answer:
86400 seconds
Step-by-step explanation:
The unit of measurement "day" (symbol d) is defined as 86,400 SI seconds.
Answer:
86,400
Step-by-step explanation:
There is a 52% chance that a player will win a certain carnival game. Which statement describes the likelihood that a player will win the game?
A The player will definitely win the game.
B It is likely that the player will win the game.
C It is unlikely that the player will win the game.
D It is neither likely nor unlikely that the player will win the game.
Answers
Harold cut 1812 inches off a rope that was 60 inches long. How is the length of the remaining rope in inches written in decimal form
Answers
Answer:
0.42
Step-by-step explanation:
The computation of the length of the remaining rope in inches is shown below:
Length Remaining = Length - the piece he cut off
Length Remaining = 60 - 18
60 - 18 = 42
To turn 42 into a decimal, you have to divide by 100 ↓
42 ÷ 100 = 0.42
The length of rope remaining is 0.42 inches long
15. A rectangle has a length of 2x - 1 and a width of 3x + 7. Find the perimeter of this rectangle.
Then find the area of the rectangle.
Answers
Answer:
10x + 12 and 6x² + 11x - 7
Step-by-step explanation:
The perimeter (P) of a rectangle is calculated as
P = 2l + 2w ( l is length and w is width )
= 2(2x - 1) + 2(3x + 7) ← distribute parenthesis
= 4x - 2 + 6x + 14 ← collect like terms
= 10x + 12
--------------------------------------------------
The area (A) of a rectangle is calculated as
A = lw
= (2x - 1)(3x + 7) ← expand using FOIL
= 6x² + 14x - 3x - 7 ← collect like terms
= 6x² + 11x - 7
An angle measures 3.2° less than the measure of its complementary angle. What is the measure of each angle?
Answers
Answer:
43.4° and 46.6°Step-by-step explanation:
x - measure of angle
x + 3.2° - measure of its complementary angle
Complementary angles adds to 90°
x + x + 3.2° = 90°
2x = 90° - 3.2°
2x = 86.8°
x = 86.8°÷2
x = 43.4°
x+3.2° = 43.4° + 3.2° = 46.6°
Find the absolute value of -4 3/2 pls help
Worth 100 points..?
Answers
Answer:
4 2/3
Step-by-step explanation:
Any negatives in absolute value signs can be turned positive because it is the same distance from 0 in the number line. (right or left, but in this case, the distance is ALWAYS positive)
Answer: -11/2
Step-by-step explanation:
1) If CB= 13; BF= 9; EF=7; Then DE=?
Round to the Hundredths.
(Hint: (whole secant)(external part) = (whole secant)(external part)
FIND DE=?
SHOW ALL WORK!!
HURRY I NEED IT FAST!!
WILL MARK BRAINLIEST!!
Answers
Answer:
if CB is 13 and BF is 9 than 13+9=22.So DF must be 22 too. If EF is 7 than 22-7=15 and DE is 15
Answer:
4
Step-by-step explanation:
The options are
36
54
72
108
SOMEONE PLSSS HELPP ME
Answers
Answer:
Step-by-step explanation:
Each internal angle in a regular pentagon = 180(n - 2) / 5 where n = 5
so < BAE = 540/5 = 108 degrees.
Triangle BAE is isosceles so
m < ABE =( 180 - 108 )/ 2
= 36 degrees.
Find the value of x please
Answers
Answer:
x=54
Step-by-step explanation:
55+54= 109
180-109=71
x+17=71
=54
Which fraction is in reduced form?
4/21
42/54
18/27
2/10
Answers
Answer:
4/21
Step-by-step explanation:
4/21 can't be reduced anymore there is no number that goes into 4 and 21 and divides perfectly.
4/21 = 4/21
42/54 = 21/27 = 7/9
18/27 = 6/9 = 2/3
2/10 = 1/5
The measure of an angle is 77°. What is the measure of its complementary angle?
Answers
Answer:
13º
Step-by-step explanation:
Complementary angles are angles that add up to 90º. So, subtract 77 from 90, and you get 13.
find the solution of given expression
[tex] \sqrt{32 \times 32 \times 4} [/tex]
Answers
Answer:
√{32×32×4}=√{32²×2²}=±(32×2)=±64
Answer:
64 will be your answer
Step-by-step explanation:
......
Select all the equations where x = 3 is a solution.
Answers
Answer: A and C
Step-by-step explanation:
[tex]\huge\text{Hey there!}[/tex]
[tex]\large\text{x = 3}[/tex]
[tex]\large\textsf{Option A.}\downarrow\\\\\mathsf{x + 4 = 7}\\\mathsf{x = 3}\\\mathsf{3+4=7}\\\mathsf{3+4 =\bf 7}\\\mathsf{7 = 7}\\\\\\\large\text{Option A. could possibly be your answer}\checkmark[/tex]
[tex]\large\textsf{Option B. }\downarrow\\\\\mathsf{\dfrac{x}{9}=3}\\\\\mathsf{x = 3}\\\\\mathsf{\dfrac{3}{9}=3}\\\\\mathsf{\dfrac{3}{9}= \dfrac{1}{3}=\bf 0.333333}\\\\\mathsf{0.333333\neq 3}\\\\\large\text{Option B. is NOT your possible answer}[/tex]
[tex]\large\textsf{Option C. }\downarrow\\\mathsf{5-x =2}\\\mathsf{x = 3}\\\mathsf{5-3=2}\\\mathsf{5-3=\bf 2}\\\mathsf{2=2}\\\\\large\text{Option C. could possibly be your answer}\checkmark[/tex]
[tex]\large\textsf{Option D. }\downarrow\\\\\mathsf{8x = 32}\\\mathsf{x =3}\\\mathsf{8(3)=\bf 24}\\\mathsf{24\neq 32}\\\\\large\text{Option D. is NOT your possible answer}[/tex]
[tex]\large\textsf{Option E. }\downarrow\\\mathsf{x - 10=7}\\\mathsf{x =3}\\\mathsf{3-10=7}\\\mathsf{3-10=\bf -7}\\\mathsf{-7\neq7}\\\\\large\text{Option E. is NOT your possible answer}[/tex]
[tex]\boxed{\large\text{Answer: \boxed{\large\text{\bf Option A. x + 4 = 7 \& Option C. 5 - x = 2}}}}\huge\checkmark[/tex]
[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]
HELLLLPP MEEEE FIND THE AREA
Answers
Answer:
12 square feet
Step-by-step explanation:
2*6=12
If we measured the heights of different plants and got 50”, 55”, 48”, 50” and 52”. What
would be the average height?
a) 50” b) 51” c) 48” d) 255”
Answers
Answer:
B
Step-by-step explanation:
50+55+48+50+52=255
255/5=51
Anwser 51
I have to show a picture and dont know how
Answers
Answer:
there should be clip under the text box
Step-by-step explanation:
For the function y = 4x – 1, what is the output when the input is 10?
Answers
Answer:
39
Step-by-step explanation:
so the input is x and the out put is y
using this we know that x=10
let plug that into the function
y=4(10)-1
y=40-1
y=39
since y is the output, the output is 39.
CAN SOMEONE HELP ME!! DUE IN 5 MINS!! 10 POINTS!!
Answers
Answer:
X= 29.5, Y=5
Step-by-step explanation:
If im reading the question correctly it tells you Y is 5, and that X is multiplied by two so half of 59 since we already know that Y is 5 is 29.5
Abel says (62)3 = 65. Is he correct? Choose the correct response.
Answers
Answer:
no
Step-by-step explanation:
Find the missing side lengths. Leave your answers in simplest radical form.
Х
у
60°
30
Answers
d. x = 15, y= 15√3
EXPLANATION:
This is a special triangle, more specifically a 30-60-90 degree triangle. For sake of not confusing x and y, we will use z to use as our reference for solving this triangle. The side lengths for each angle are as follows:
• 60 degrees = z√3
- this is the value for your y answer
• 30 degrees = z
- this is the value for your x answer
• Hypotenuse = 2z
- this is what we already have
We solve for what we already have which is the Hypotenuse = 30:
2x = 30
x = 15
We now have our x value which is 15.
Now we just plug in that x value for every expression for every angle.
x = 15
y = 15√3
Sorry if I explained it too thoroughly but I’ll be glad to answer any questions or clarifications
Two semicircles are attached to the sides of a rectangle as shown.
(WILL GIVE BRAINLY IF RIGHT)
What is the approximate area of this figure?
Use 3.14 for pi.
Enter your answer in the box. Round only your final answer to the nearest whole number.
Answers
Answer:
157 in²Step-by-step explanation:
The area of the shape is the sum of three sections
1. Rectangle
A = 5*14 = 70 in²2. Bigger semicircle
A = 1/2π(14/2)² = 76.96 ≈ 77 in² (rounded)3. Smaller semicircle
A = 1/2π(5/2)² = 9.8174 ≈ 10 in² (rounded)Total area:
70 + 77 + 10 = 157 in²answer:
157 inches²
step-by-step explanation:
we have to break this down into parts and find the area of each part and then add them up so we have the area for the whole thingrectangle:
5 X 14 = 70 inches²
big semicircle:
solve this like a simple circle and then divide by 2 since this is halfarea = πr²
insert what we know from the questionarea = (3.14)(7)²
the radius would be seven because as you can see the length of a side of the rectangle is 14 and this is also the diameter of the circle since they are attached and share itthe radius is half of the diameter so we get 7area = 3.14(49)
= 153.86 inches²
now divide this by 2 since it is semicircle153.86 / 2 = 76.93 inches²
small semicircle:
area = (3.14)(2.5)²
i followed the same method as last, except the numbers are differentarea = 3.14(6.25)
= 19.625 inches²
now divide by 219.625 / 2 = 9.8125 inches²
finally, add up all the separate areas you got70 inches² + 76.93 inches² + 9.8125 inches²
= 156.7425 inches²
= 157 inches²
Can Anybody Help Geometry Work Will Give Brainliest!
Answers
A rectangle prisms base is 8 feet long. It is 2 1/2 times taller than it is long and 1/2 wide as it is tall. What is the volume of the rectangular prism?
Answers
Answer:
1600 cubic feet
Step-by-step explanation:
8 x 2 1/2 = 8 x 2.5 = 20
20 divided by 1/2 = 10
8 x 10 x 20 = 1600