Answer:
x= -10
y= -4
Step-by-step explanation:
Given data
3x+1=8y----------------1
11y-3x=-11--------------2
rearange
3x-8y=-1------------------1
-3x+11y=-11---------------2
add 1 and 2
3x-8y=-1------------------1
-3x+11y=-11---------------2
0+ 3y= -12
y= -12/3
y= -4
put y= -4 in 2
11y-3x=-11
11(-4)-3x=-11
-44-3x=-11
-44+11=3x
-33= 3x
x= -33/3
x= -10
What are the measures of the other three angles formed by the intersection?
Answer:
1 = 130
2 = 50
3 = 130
Step-by-step explanation:
Since we already know that one angle is 50 degrees, this also tells us that angle two is congruent to it because it is opposite to it. Now the two other adjacent angles, basically just do 180-50 to get 130.
como fasso essa conta 2x-10=50
Answer:
correct
Step-by-step explanation:
How many more miles per gallon does Mrs. Sanchez get than Mr. White?
Mrs. Sanchez
y = 36x
Let x represent number of gallons and y represent numbers of miles.
Mr. White
# of gallons miles
2.5
76
5
152
15
456
18
547.2
miles per gallon
Sabrina has designed a rectangular painting that measures 60 feet in length and 40 feet in
width. Alfred has also designed a rectangular painting, but it measures x feet shorter on
each side. When x = 2, what is the area of Alfred's painting?
Answer:
100
Step-by-step explanation:
i need help find AC please
Answer:
isnt it in your room
Step-by-step explanation:
( Click on the photo to see fully)
How does this create two “congruent” right angle triangles when i thought it had to be similar in 3 ways to be congruent
Though these segments aren't marked congruent in the diagram, the two lines inside the circle making up the bases of the triangles are congruent as all radii are congruent. So the triangles are congruent by SAS.
Answer the question above
Answer:
BA
Step-by-step explanation:
Here, we want to get the hypotenuse side
The hypotenuse represents the longest side
it is the side that faces the largest angle in a right triangle
The largest angle in a right triangle is the right angle which is the angle 90
It is like the square at a corner at the vertex C
The side facing it here is the the length AB (BA)
Frank designed a net for a storage shed that he is going to construct out of metal. The design consists of a square base and four square sides, plus four triangular parts that make up the roof.
He had 250 square feet of metal to use to build the shed. (What is the surface area of the storage Shed that Frank Designed?) (Does Frank have enough metal to construct his design yes or no?)
Answer:
Yes, Frank does have enough, he has 250 metal and only has 228 surface area.
Step-by-step explanation:
You take all the triangles (4) and multipy 4 x 6 (24) then divide that by 2 (12) so now you know all the triangles are equal to 12. Then the squares, you multiply 6 x 6 (36) now you know all the squres are equal to 36 and then you add 12 + 12+12+12+36+36+36+36+36 and then you get 228.
Select each figure which the value of x is 42
Answer: 6
Step-by-step explanation: Sorry if it's wrong
Which situation could be represented by -18
A. A gain of $18
B. A distance of 18 meters above sea level
C.A temperature of 18 degrees above zero Fahrenheit
D. A loss of 18 points
The equation of a line a is given by 3y=x+12
- Find line c that is perpendicular to line a and passes through the point (6, -8)
Answer:
Y+8=-3(x-6)
Step-by-step explanation:
Please helpppp i don’t understand
Answer:
Think the answer will just be 5
Step-by-step explanation:
I don't use step by step so yeah
the length of the hypotenuse of a right triangle is 15 and the length of one leg is 12 find the length of the other leg
Answer:
the other leg would be 12
Find the area of the figure. Round to the nearest tenth
Answer:
Find the area of each triangle and then add it up. As you are aware, to find the area of a triangle the equation is B times Height divided by 2. And to make it easier do the top left triangle and the top right triangle, add them together and then divide that by 2.
Step-by-step explanation:
3 time 5 equals 15 divided by 2 equals 7.5
5 times 8 equals 40 divided by 2 equals 20
7.5 plus 20 equals 27.5
27.5 times 2 equals 55
therefor your answer should be 55m
please pls help
a+12=21
Answer:
Down Below
Step-by-step explanation:
[tex]a+12=21\\a+12-12=21-12\\a=9[/tex]
Answer:
9
Step-by-step explanation:
a +12 = 21
a + 12 - 12 = 21 - 12
a = 9
What is the surface area of the shoebox with the dimensions shown in the figure?
Answer:
256in^2
Step-by-step explanation:
12×5=60
60×2=120
5×4=20
20×2=40
12×4=48
48×2=96
120+40+96=256
A=256in^2
If you spin the spinner 11 times, what is the best prediction possible for the number of times it will land on yellow?
Answer:50%
Step-by-step explanation:
What is the amplitude of the function?
2.
O
3
O
4
5
Answer: 3
Step-by-step explanation:
3 cm
5 cm
6 cm
What is the surface area of the solid above?
A. 108 cm2
B. 126 cm2
C. 14 cm2
D. 96 cm2
Answer:
check my explanation
Step-by-step explanation:
yes it is c.
by adding the ones on screen
it is option C
Concept 9.7: Write the equation of the circle with center at (-7, 11) and radius of 8.
if it wants the measurement of arcJK....
Answer:
ArcJK= 128
Step-by-step explanation:
Circle is 360 degrees
<KL is the diameter which is a straight line equals 180 degrees
Since <KLis also a central angle arcKL equals 180
Take <K (26) and times by two cause its an inscribe angle, 26*2=52
arcJL=52
add both arcKL and arcJL together: 180+52=232
then you take 360-232=128
and 128 is KLarc
Dado a seguir 1, 1, 1, 2, 4, 2, 6, 3, 3, 7, 2, 3, 8, 9 podemos afirma que:
a)A média é 3
b)A moda 7
C)A mediana é 3
d)a moda é 1
e)a media é 3,4
Can someone help me please? Ill mark brainliest c:
in a class room 1/6 of students are wearing blue shirts 2/3 are wearing white shirts there are 12 students how many are wearing shirts other than blue shirts?
Answer:
4 students
Step-by-step explanation:
what we know: 12 students, 2/3 are wearing blue, 1/6 are wearing red
first you have to make the fractions have the same denominator(2/3=4/6)
theres also 1/6 that are not wearing blue or red (1/6+4/6=5/6, 6/6-5/6=1/6)
so that makes it 2/6 of the students not wearing blue(1/6+1/6=2/6)
simplify(2/6=1/3)
1/3 of 12 is 4 (12÷3=4)
the equations are in parentheses and bolded, italicized, underlined.
hope this helps :)
Could someone please help me out with this
Answer:
17 + 4 = 21
21 x 6 = 126
126 divided by 2 = 63 in2
Step-by-step explanation:
Area of trapezoid:
B1(base 1) + B2(base 2) x H (height) x 1/2 (basically dividing by 2)
If the graph of a quadratic function has x-intercepts at x = -1 and x = -2, what conclusions can be drawn about the function?
A. The roots of the function are 1 and 4.
B. The roots of the function are -1 and -2.
C. There is not enough information given to answer the question.
D. The zeroes of the function are 0 and 4.
If triangle height was 3ft and the base was 24ft what be the area? WILL GIVE BRANLIEST
Answer:
A=36 ft²
Step-by-step explanation:
the formula for the area of a triangle is given as (b*h)/2, where b is the base and h is the height
we are given the a height of 3 and a base of 24
so we can plug what we know into the formula
A=(3*24)/2
multiply
A=72/2
divide
A=36 ft²
hope this helps!
can you please help me
Answer:
I can see the picture can u resend it?
Step-by-step explanation:
A counselor plans transportation for 120 students for a field trip using buses and vans.
• Exactly 120 students can fit in 2 buses and 2 vans.
Exactly 120 students can also fit in 1 bus and 6 vans.
.
Which statement is true?
Answer:
Each bus can fit
48
students, while each van can fit
12
students.
Step-by-step explanation:
Quadrilateral WILDWILDW, I, L, D is inscribed in circle OOO. \overline{WI} WI start overline, W, I, end overline is a diameter of circle OOO. What is the measure of \angle D∠Dangle, D?
Answer:
135degrees
Step-by-step explanation:
Find the diagram attached.
Note that in a cyclic quadrilateral, the sum of the opposite side of the quadrilateral is 180degrres.
According to the diagram shown:
<D+<I = 180
<D+45 = 180
Subtract 45 from both sides
<D+45-45 = 180-45
<D = 180-45
<D= 135°
Hence the measure of <D is 135degrees
Answer: 135
Step-by-step explanation: khan academy
The mean of 12 numbers is 20 and the mean of another 8 numbers is 25 find the mean of the 20 numbers
Answer:
22
Step-by-step explanation:
mean is calculated as
mean = [tex]\frac{sum}{count}[/tex]
Given the mean of 12 numbers is 20 , then
[tex]\frac{sum}{12}[/tex] = 20 ( multiply both sides by 12 )
sum = 240
Given the mean of 8 numbers is 25 , then
[tex]\frac{sum}{8}[/tex] = 25 ( multiply both sides by 8 )
sum = 200
Total sum of the 20 numbers = 240 + 200 = 440, then mean of 20 numbers is
mean = [tex]\frac{440}{20}[/tex] = 22