Answer:
a = -5
Step-by-step explanation:
22 = 7 -3a
(subtract 7)
15 = -3a
(divide -3)
a = -5
OR
22 = 7 -3a
(add 3a)
3a + 22 = 7
(subract 22)
3a = -15
(divide 3)
a = -5
The Charles River in Massachusetts is 130 km long.
How long will it be on a map drawn at the scale 1:2,000,000?
plsplsplsplsplsplsplspslpslpslpslpslsplspslplsplspslpslpslpslpslpls help
rsm is hard
Answer:9
Step-by-step explanation:
basically what you do is 1equal 1 divided by 8 2 68 equals one so yea
Answer: 6.5 cm
Step-by-step explanation:
1 km= 1000000 cm
130 km / 2,000,000 = 6.5
PLEASE HELP MEEE!!!!!!
how do you solve (5)/(18)-(x-2)/(9)<=(x-4)/(6)
Answer:
x ≥ [tex]\frac{21}{5}[/tex]
Step-by-step explanation:
Given
[tex]\frac{5}{18}[/tex] - [tex]\frac{x-2}{9}[/tex] ≤ [tex]\frac{x-4}{6}[/tex]
Multiply through by 18 ( the LCM of 18, 9 and 6 ) to clear the fractions
5 - 2(x - 2) ≤ 3(x - 4) ← distribute parenthesis and simplify
5 - 2x + 4 ≤ 3x - 12
9 - 2x ≤ 3x - 12 ( add 2x to both sides )
9 ≤ 5x - 12 ( add 12 to both sides )
21 ≤ 5x ( divide both sides by 5 )
[tex]\frac{21}{5}[/tex] ≤ x , that is
x ≥ [tex]\frac{21}{5}[/tex]
whats the slope and y intercept of the line: y=1/2x +2
Answer:
slope: 1/2
y-intercept: 2
Step-by-step explanation: If u go by y=mx+b, you know that m= your slope and b equals the y-intercept. so to put them together:
y=mx+b
| |
y=1/2x+2
Figure 3 shows a sketch of part of the curve C with equation
Y=x(x+ 4)(x - 2)
The curve C crosses the x-axis at the origin and at the points A and B.
(a) Write down the x-coordinates of the points A and B.
Answer:
Step-by-step explanation:
because The curve C crosses the x-axis at the origin and at the points A and B => the x coordinates of A and B are the solution of the equation:
x(x + 4)(x - 2) = 0
<=> x = 0
x = -4
x = 2
because the x-coordinates of the points A and B aren't 0 and the x-coordinate
of A is a negative value
=> the x-coordinate of A is -4
the x-coordinate of B is 2
What is the largest output achieved by the function? At what x-value is it hit (also will mark Brainlest!!!)
Answer:
f(1) = 4
Step-by-step explanation:
Largest output is 4, when x=1.
Answer:
f1 = 4
Step-by-step explanation:
Somebody help with 1 & 2..Help solve for x
Answer:
x = 574 and x = - [tex]\frac{3}{4}[/tex]
Step-by-step explanation:
(1)
0.25x = 143.5 ( isolate x by dividing both sides by 0.25 )
x = 574
(2)
- 4x + [tex]\frac{1}{2}[/tex] = 3 [tex]\frac{1}{2}[/tex] ( subtract [tex]\frac{1}{2}[/tex] from both sides )
- 4x = 3 ( divide both sides by - 4 )
x = - [tex]\frac{3}{4}[/tex]
x = 574, How did I get this answer? I simply divided 143.5 by 0.25 and you get 574, which will be the missing number (also known as x.)
But, before you write this down as your answer - how can we check if 574 is correct?
Well we're going to have to do the reverse of dividing, which'll be multiplying.
Multiply 0.25 by 574! (It does equal 143.5), Therefore, you have checked your answer and now you know it is correct.
#2. -4x + [tex]\frac{1}{2}[/tex] = 3This equation simplifies to [tex]\frac{2x-1}{4} = \frac{7}{2}[/tex]. Let's go on ahead and figure this problem out step-by-step!
First, we have to cross multiply. As shown here:
(2x-1) × (2) = 7 × 4x
4x - 2 = 28x
After that, we're going to have to subtract 28x from both sides of the equation.
4x - 2 - 28x = 28x - 28x
-24x - 2 = 0
Next, add 2 to both of the sides.
-24x - 2 + 2 = 0 + 2
- 24x = 2
On your last step before finding out what x is, the final thing we've got to do is divide both sides by -24.
[tex]\frac{-24x}{24} = \frac{2}{-24}[/tex]
x = [tex]\frac{-1}{12}[/tex]. This is your solution for #2.
If this was helpful to you, please give a thanks and rate it! Also please mark brainliest if it was all correct and helped you. :) I'd really appreciate it, have a good day!
Write an equation in slope intercept form for the line that it passes through (10, 3) and is parallel to the line described by y = 4x + 7.
Answer:
y = 4×-37
Step-by-step explanation:
y - 3 = 4(× - 10)
y - 3 = 4× - 40
+3. +3
y = 4x - 37
sorry if this wrong, but the equation setup is right
find the coordinates of the vertices of the image when abc is dilated by a factor of 2. the vertices for the preimage are a(1,1), b(2,2), and c(1,3).
Answer:
its c
Step-by-step explanation:
plz give brianllets
I NEED HELP ASAP. I WILL GIVE BRAINLYIST!! The speed of an object in space is shown in the graph.
Answer:
3/2
rises by 3
runs by 2
I hope this is good enough:
8th grade geometry HELP PLEASE THIS IS ALREADY LATE AND IS COMPLETELY DUE SOON
Answer:
U need to post a pic so I can see ur question
Step-by-step explanation:
What is the value of 2/13÷2/3
Answer:
[tex]\frac{2}{13}/\frac{2}{3}\\ \frac{2}{13}*\frac{3}{2}\\\frac{3}{13}[/tex]
Step-by-step explanation:
Please help me with this
Answer:
11z + 11
Step-by-step explanation:
Is it a rational or irrational?
Answer:
rational
Step-by-step explanation:
because it has a decimal
Answer:
Rational
Step-by-step explanation:
Any number that is a repeating decimal or can be represented by a fraction is a rational number. If there is a decimal with no pattern, it is irrational... but otherwise, it is considered rational.
Perform the following mathematical operation, and report the answer to the correct umber of significant figures 7.125*8.00
Answer:23☺️
Step-by-step explanation:
Answer:
57.0
Step-by-step explanation:
I got it from a calculator and when I typed it in, it was correct.
simplify the square root of 18
a. 2 radical 3
b. 2 radical 9
c. 3 radical 2
d. 9 radical 2
answer asap’!!!!!!!!!!
Answer:
Y axis
Step-by-step explanation:
this is correct iehegejdbd
Answer:
This is a reflection over the x-axis.
Step-by-step explanation:
The x-axis goes vertically;
The y-axis goes horizontally.
I hope this helped you! If it did, please consider pressing thanks, rating my answer, and marking as Brainliest. It would be a big help! Have a great day! :)
9. y + 7 = 2(x + 5)
in standard form
Answer:
y=2x+3
Step-by-step explanation:
1. y+7=2(x+5) (rewrite the problem)
2. y+7=2x+10 (distribute the 2)
3. y=2x+3 (subtract 7 from both sides; 10-7=3)
What is the slope and y-intercept of the graph?
Slope:
y-intercept:
Answer:
Slope: 0
Y-intercept: 2
Step-by-step explanation:
Answer:
Slope = 0
Y-intercept = 2
Step-by-step explanation:
Hello!
The slope of the graph is how much the graph rises, compared to how much the graph runs.
As you can see here, the graph rises by 0, but runs infinetely, giving a slope of 0.
The y-intercept of the graph is where the graph intersects the y-axis.
The y-intercept here is 2, because it crosses the y-axis at (0,2).
Calculate the slope of the line passing through the points (4, 7) and (9, -1).
the answer is -8/5
ur welcome lolz
Answer:
The slope is -1.6
How can we change 1 litre into 1000cm3
Step-by-step explanation:
1 Liter (L) is equal to 1000 cubic centimeters (cm3). To convert liters to cubic centimeters, multiply the liter value by 1000. For example, to convert 2 liters to cubic centimeters, multiply 2 by 1000, that makes 2 L is 2000 cm3.
Write a sentence of the form “–––––––––––––– is a function of –––––––.”
Type your response in the space below.
Answer:
my mom is a function of disappointment
Step-by-step explanation:
why? becuase shes mean
The weights, in ounces, of three different packages of cookies are listed below. Which list shows these weights in order from least to greatest? A 7.25, 7 1 7 , 7.7 B 7 1 7 , 7.25, 7.7, C 7.25, 7.7, 7 1 7 , D 7 1 7 , 7.7, 7.25
Answer: C. 7.25, 7.7, 7 1 7
Step-by-step explanation:
From the question, we are given the weight , in ounces, of three different packages of cookies and we are told to arrange them in ascending order that is, from the least to the greatest.
The least of the numbers is 7.25. After then we have 7.7 and the greatest is 717. Therefore this can be arranged as:
7.25, 7.7, 7 1 7
Therefore, the correct option is C.
Write the linear equation in slope intercept form (-2,-4) and (-3,-3)
Will mark BRAINLIEST and give 50 points
Answer:
get from (4,1) to (2,9) go up 8 and over 2 left (-2) - (4 - 2, 1 + 8), do this again (2 - 2, 9+8) and end up at (0,17) which is the y how do you change 7x+3y=3 into slope intercept form.
:D thanks :D
which triangle is the most similar to triangle ABC?
Two trains leave stations 324 miles apart at the same time and travel toward each other. One train travels at 100 miles per hour while the other travels at 80 miles per hour. How long will it take for the two trains to meet? Do not do any rounding.
Answer: The first train gets to the station in 3 hours 14 minutes, and 40 seconds if it is a consent speed of 100 mph The second train gets to the station in 4 hours and 3 minutes if it is a consent speed of 80 mph, so they would meet in 4 hours and 3 minutes.
Step-by-step explanation:
what is 2 wholes 3/5 x 3 wholes x 1/3
Answer:
2 3/5 x 3 1/3 = 26/3 = 8 2/3
am • an = am + n, where a is a real number and m and n are integers
Use the product of powers property to simplify the expression –2x3y4x2y3.
–2(xy)12
–2(xy)72
–2x6y12
–2x5y7
Answer:
it's D i just took it.
Step-by-step explanation:
Answer:
D. -2x^5y^7 on edge
Step-by-step explanation:
3
The table below shows the number of teachers with different hair colors at a school.
Hair Color
Number of Teachers
Red
3
Brown
12
Black
16
Gray
8
Blonde
20
Use the drop-down menu to correctly complete the statement:
For every
6
teachers with blonde hair, there are
4
V
teachers with brown hair.
Hint(s)
1/1
Answer:
where is the table
Step-by-step explanation:
please make the statement clear instead of copy and pasting the question so we can answer the question correctly
HELP! Will mark brainliest asap!) List the steps from what you would do first, to last, to simplify by division.
1 split the problem into pieces
2 simplify the coefficient
3 simplify the variables using the rule of exponents
4 put each term in the numerator over the denominator
5 reduce the fractions
Answer:
3
2
1
4
5
Step-by-step explanation:
Not sure if I'm right cuz I might've learned how to do it differently. Hope this helped tho, Have a Wonderful Day/Night!!!
