Answer:
5
Step-by-step explanation:
this can be solved using simultaneous equation
2a + 3b = 19 equation 1
1a + 4b = 17 equation 2
Multiply equation 2 by 2
2a + 8b = 34 equation 3
Subtract equation 1 from 3
5b = 15
b = 3
Substitute for b in equation 1
2a + 3(3) = 19
2a = 9 = 19
2a = 10
a = 5
Answer:
Step-by-step explanation:
2a + 3b = 19 equation 1
1a + 4b = 17 equation 2
Multiply equation 2 by 2
2a + 8b = 34 equation 3
Subtract equation 1 from 3
5b = 15
b = 3
Substitute for b in equation 1
2a + 3(3) = 19
2a = 9 = 19
2a = 10
a = 5
Tell whether xy = 8 shows direct variation, inverse variation, or neither.
Answer:
inverse
Step-by-step explanation:
y = k/x indicates inverse variation, which is the same as xy = k
in this particular problem, k = 8
What does the 49 days until Fourth of July there are seven days in a week and how many weeks will it be Fourth of July
Answer:
It will be Fourth of July in 7 weeks.
Step-by-step explanation:
Since you know that there are seven days in a week, you can use a rule of three to find the amount of weeks in 49 days that is the number of days until Fourth of July:
7 days → 1 week
49 days → x
x=(49*1)/7
x=7
According to this, the answer is that it will be Fourth of July in 7 weeks.
weight of sheep,in pounds, at the Southdown sheep farm:
what is the range of weights of the sheep?
plz anwser asap I'm being timed
Answer: 170
Step-by-step explanation:
275-105
Use the distributive property to expand (simplify): 4(x + 7)
Answer:
4x+28
Step-by-step explanation:
Hi there! :)
The Distributive property is here to help us simplify!
Let's remember what this useful property states.
It states that
a(b+c)=ab+ac
Now, let's use this property to simplify the given expression:
4(x+7)
4x+28
Hope it helps!
Enjoy your day!
[tex]\bf{-Misty ~Sparkles-[/tex]
Similar Triangles? (yes or no)
by which criteria? (AA- SAS-, SSS- or not enough info)
Answer:
Yes but not in size and not enough info
Step-by-step explanation:
Hope it helps
Please brainliest
What is the volume, in cubic feet, of a rectangular prism with a height of 5 feet, aho
width of 20 feet, and a length of 5 feet?
Answer:
500 cubic feet
Step-by-step explanation:
5 * 20 * 5 = 500 cubic feet
Evaluate the following: 77 - |( -8)(3) + (-10)(4)|
Answer:
13
Step-by-step explanation:
77−|(−8)(3)+(−10)(4)|
=77−|−24+(−10)(4)|
=77−|−24+−40|
=77−|−64|
=77−64
=13
Hope this helps
Tome walks 1/3 of a mile in 1/4 of an hour. At this rate, how many miles will Tom walk in 1 hour?
Answer:
2 miles i think
Answer:
In 1 hour, he'll walk 4/3 miles
Step-by-step explanation:
Ratios:
[tex]\frac{1/3}{1/4} =\frac{x}{1} \\\\\frac{1}{4} x=\frac{1}{3} \\\\x=\frac{4}{3}[/tex]
the base of a jewelry box is a square with a side length of 5 1/2 inches. the box is 2 inches high. what is the volume of the box?
The volume of the jewelry box is 60 1/2 cubic inches.
The area of a square with a side length of 5 1/2 inches can be found by multiplying the length of one side by itself, giving:
Area = (5 1/2) × (5 1/2) = 30 1/4 square inches
The height of the box is 2 inches.
Therefore, the volume of the jewelry box can be found by multiplying the area of the base by the height of the box, giving:
Volume = Area x Height = (30 1/4) × 2 = 60 1/2 cubic inches
Thus, the volume of the jewelry box is 60 1/2 cubic inches.
Learn more about the volume here:
https://brainly.com/question/9465338
#SPJ1
Can someone please help me
Answer:
Point Form:
(-3, -5)
Equation Form:
x = -3, y = -5
Step-by-step explanation:
Hope This Helps! : )
how many boys are in the choir
9514 1404 393
Answer:
D. 210
Step-by-step explanation:
If b is the number of boys in the choir, the ratio of boys to girls is ...
b/150 = 7/5
b = 150(7/5) = 30(7) = 210
There are 210 boys in the choir.
A population of 1,996 unicorns is going extinct at a rate of about 24 unicorns per year. A separate population of 1,229 dragons is going extinct at a rate of about 11 dragons per year. After how many years will the two populations be equal?
Answer:
https://youtu.be/QZ_a8VXhiSc
Step-by-step explanation:
https://youtu.be/BX0K5IfPMOA
if five times of a number is 125 then 0•8 of this number is
Answer:
20
Step-by-step explanation:
5n = 125
n = 25
0.8 x 25 = 20
what is the product of the polynomials below? (8x^2-4x-8)(2x^2+3x+2)
The interior angles of a triangle have measures 90°, 48°, and xº.
What is the value of x?
Answer:
42°
Step-by-step explanation:
The interior angles of a triangle always add to 180 degrees.
90+48+x=180
x=180-90-48
=42
x is 42°
The table below shows some values of x=y-4 for values of x from -2 to 8
What is A, B and C please
Answer:
everything you need to know can be found in the picture
15% off an annual subscription of 86$.How much will the customer save.
Answer:
$12.90/ 12.9
Step-by-step explanation:
divide 15 % by 86
Please help.
Is algebra.
PLEASE HELP NO LINKS OR FILES.
I don't want links.
A rectangle has a length of 2x+3 and a width of 10x-4. Find the perimeter and area of the figure
Step-by-step explanation:
perimeter is 4x+6 +20x-8=20x-2
area is 20x^2+22x-12
HELP ASAP!!!!! 25 POINTS + BRAINLIEST!!!!
(if it is not a ligament answer, i will report)
Answer:
2 x 3(x + 4) + 2 x 7(x + 2) = 20x + 52
Step-by-step explanation:
2 x 3(x + 4) + 2 x 7(x + 2) = 6x + 24 + 14x + 28 = 20x + 52
The dimensions of a cylindrical water tank are shown below.
18 yd
60 yd
Which of the following is the best estimate of the volume of this water tank?
A 58,320 ya
B 3,240 yd
C 14,500 yd
D 19,440 yd
rewrite 10/9 as a mixed number
Answer:
you know i think it is 9 10/9 as a mixed number sooo i hope this help
Answer:
1 1/9
Step-by-step explanation:
I don't have an explanation, you're just gonna have trust me on this one
solve for x. please please i need help help me please
A robot vacuum advertises that it can clean a 120-square-foot room in 1/2 an hour. How many square feet could the robot vacuum clean in 1 hour?
Answer: 240 square foot room
Step-by-step explanation: They ask for how many square feet in 1 hour which is double the 1/2 hour. So, just do 120x2=240 to get your answer! (Don’t forget to label ,square-feet,)
please help with this problem
Answer:
9
Step-by-step explanation:
constant of proportionality in this problem is the cost per pant
Expand the expression 3(-2a+3b)
Answer:
-6a +9b
Step-by-step explanation:
First distribute 3 to terms inside parenthesis
-6a + 9b
Final answer -6a +9b
Which equation does not represent a linear function
Answer:
D should be the one that DOES NOT represent a linear function
PLEASE HELP
I WILL MARK BRAINLIEST
Answer:
False
Step-by-step explanation:
They don't look alike
Rewrite the expression by combining like terms. 3y + 5x2 + 10x + 2x2 + 15x – 3y
Answer:
7x²+ 25x
Step-by-step explanation:
is y=1/4x+1/3 proportional or non proportional
Answer:
non proportional
Step-by-step explanation:
