Reason What is a first step to solving for x
in the equation 9x - 7 = 10? How would you
check your solution? © MP.2
Answer:
Answer: Do -7 + 7 and do the same to 10, (7 + 10). This is the first step in Isolating the variable.
Step-by-step explanation:
hope it's right
[tex]\large \mathfrak{Solution : }[/tex]
let's solve for x :
first step : adding 7 on both sides
[tex]9x - 7 = 10[/tex][tex]9x - 7 + 7 = 10 + 7[/tex][tex]9x = 17[/tex]next step : dividing by 9 on both sides :
[tex] \dfrac{9x}{9} = \dfrac{17}{9} [/tex][tex]x = \dfrac{17}{9} [/tex]now, let's check for the solution by Plugging the value of x as 17 / 9 in the above equation.
[tex]9x - 7 = 10[/tex][tex](9 \times \dfrac{17}{9} ) - 7 = 10[/tex][tex]17 - 7 = 10[/tex][tex]10 = 10[/tex]we can see that the LHS = RHS, therefore our value for x is correct. i.e 17 / 9
If a + b = 20 and ab = 75, find the value of a + b?
Answer:
a=5 or a=15, b=15 or b=5
Step-by-step explanation:
b=20-a
a(20-a)=75
20a-[tex]a^{2}[/tex] -75=0
-[tex]a^{2}[/tex]+20a-75=0
[tex]a^{2}[/tex]-20a+75=0
(a-5)(a-15)=0
a-5=0 or a-15=0
a=5 or a=15
b=15 or b=5
(:
Answer:
Step-by-step explanation:
a + b = 20
Sum of roots = 20
ab = 75
Product of roots = 75
x² - (a +b) x + ab = 0
x² - 20x + 75 = 0
Sum = coefficient of x = -20
Product = 75
Factors = 15 , 5 {15*5 = 75 & 15 +5 = 20}
x² - 15x - 5x + 75 = 0 {Rewrite the middle term}
x(x - 15) - 5(x - 15) = 0
(x - 15) (x - 5)=0
x - 15 = 0 ; x -5 = 0
x = 15 ; x = 5
a = 15 ; b= 5
A rectangular room is 5 meters longer than it is wide, and its perimeter is 26 meters. Find the dimension of the room.
Answer:
l=×+5
w=×
p=2(×+5+×)
=2(2×+5)
26=4×+10
26-10=4×
16=4×
×=4
length=5+4=9
width=4
SOLVE:
-30 - 6
Please also explain how you got your answer. thank you
Answer:
-30 - 6 = -36
Step-by-step explanation:
If you take away 6 from -30 you get -36! I hope this helps you out :).
-24
Step-by-step explanation:
a negative plus or minus a positive will always be negative! and just subtract nor mally like 30 - 6 = 24 and just add the sign after! which gives you -24
Boom hoped i helped bud
If you burn 10 calories each minute you jog. What integer represents the change in your calories after you jog for 20 minutes
Answer:
200
Step-by-step explanation:
10 × 20 = 200
have a good day
I need help with #41 and #42 ASAP please help me
Answer:
4 is the answer to the 1st question
Find the measure of unknown angle
Answer:
Step-by-step explanation:
z = 102 degree (opposite angles of a parallelogram are equal)
z + x + 34 = 180 degree 9sum of adjacent angles of a parallelogram is 180 degree)
102 + x + 34 = 180
x = 180 - 136
x = 44 degree
y + 102 + x = 180 degree (sum of interior angles of a triangle is 180 degree)
y + 102 + 44 = 180
y = 180 - 146
y = 34 degree
Answer:
x = 44°, y = 34°, z = 102°
Step-by-step explanation:
The opposite angles of a parallelogram are congruent , then
∠ z = 102°
Consecutive angles are supplementary , then
x + 34° + 102° = 180°
x + 136° = 180° ( subtract 136° from both sides )
x = 44°
∠ y = 34° ( alternate angle
Can yall pls tell me the number
Answer:
4
Step-by-step explanation:
The fraction reduces to 4/7
4
Step-by-step explanation:
both of the numbers are divisible by 7 so you do 28/7 = 4
WRITE EACH PROPORTION:
1: 48 is to 32 as 3 is to 2
2: 6 adults is to 10 children as 18 adults is to 30 children.
3: If 12 pens cost $4, then 33 pens will cost $11.
Answer:
hmmm... some are already recduced...
1) 3:2
2) 3:5
3) 3:1
Step-by-step explanation:
At the beginning of the day, the stock market
goes up 302 points. At the end of the day, the
stock market goes down 1202 points. What is
the total change in the stock market from the
beginning of the day to the end of the day?
Answer:
-900
Step-by-step explanation:
Help me brooo please
The janitor at a school discovered a leak in a pipe. The janitor found that it was leaking at a rate of 6 fl oz. per minute. How fast was the pipe leaking in gallons per hour?
Answer:
2.8125 gallons per hour
Step-by-step explanation:
gallon = 128 fl oz
hour = 60 minutes
(6/128) x 60 = 2.8125
Identify the domain of the function shown in the graph.
Answer:
C. x is all real numbers.
Step-by-step explanation:
Since the domain is likely infinite, then the domain must be all real numbers so x is all real numbers.
explain why 3.51+8.13 is rational pls help me
[tex]3.51+8.13=11.64=\frac{1164}{1000}=\frac{291}{250}[/tex]
Since the sum can be expressed as the ratio of two positive integers, it is rational.
SOMEONE PLEASE ANSWER!!!!
Evaluate each expression for t = 0, x = 1.5, y = 6, and z = 23
1. y + 5 = ??
2. z - 2x = ??
3. 2z - 2y = ??
4. 2.6y - 2x =??
5. 4(y - x) = ??
6. 4(2 + z) + 5 = ??
Answer:
1. 11
2. 20
3. 34
4. 12.6
5. 18
6. 105
Step-by-step explanation:
We are told that ---> t = 0, x = 1.5, y = 6, and z = 23
1. y + 5
= 6 + 5
= 11
2. z - 2x
= 23 - 2(1.5)
= 23 - 3
= 20
3. 2z - 2y
= 2(23) - 2(6)
= 46 - 12
= 34
4. 2.6y - 2x
= 2.6(6) - 2(1.5)
= 15.6 - 3
= 12.6
5. 4(y - x)
= 4(6 - 1.5)
= 24 - 6
= 18
6. 4(2 + z) + 5
= 4(2 + 23) + 5
= 8 + 92 + 5
= 105
PLEASE HELP!!! The line graph shows Calvin’s savings account balance at the end of each month for 6 months.
About how much more money did Calvin have in his account at the end of June than at the end of April?
Assessment graphic
$50
$75
$90
$25
Answer:
$20
Step-by-step explanation:
Answer:
I know the answer now its 25$
Step-by-step explanation:
I figured it out
Each big square below represents one whole What percent is represented by the shaded area?
Answer:
186%
Step-by-step explanation:
Looking at the squares, we can see that the first one has been completely shaded. That means that it is 100% shaded.
The second square has 86 out of 100 squares shaded, so that means that it is 86% filled.
Therefore 186% is filled by the shaded area.
Which point has a coordinate with the
greatest absolute value?
L
B
N
с
-10 -8 -6 -4 -2
0 2 4
A. Point B
B. Point C
C. Point L
D. Point N
Answer:
d point n I think that's the answer
Marcus wants to buy a gallon of orange juice. If a 1-gallon jug costs $4.58
and a quart costs $1.59, how much money would Marcus save by buying the
1-gallon jug instead of multiple quarts?
O A. $2.99
O
B. $0.19
C. $1.78
O D. $1.40
????
Can anyone help me with this please??
Answer:
3[tex]16.4 \times 0.6 [/tex]find the value of (4/25)^-1/2
Hey there! Here's your answer:
2/5 Or 0.4 Or 40%
Here's an explanation:
(4/25)^1/2 =
√(4/25) =
2/5
Simplify the expression below and show your work.
PLEASE ANSWER!! ASAP!
Answer:
[tex] \frac{2 {x}^{2} \sqrt{2 \times z} }{z} [/tex]
Step-by-step explanation:
attached
there are 34 people
I walk into the garden
You kill 30 people
how many people are in the Garden ?
Answer quick plz
Answer:
I guess 34 because the dead people were still in the garden
z^2 - x; use x = 1, and z = 3
Answer:
8
Step-by-step explanation:
3^2 = 9 - 1 = 8
Considerando um atleta de 1,83 m e o ângulo de inclinação de 20 graus formada pela ponta da vara com o chão é correto afirmar que o comprimento aproximado da vara mede?
Resposta:
A vara mede 5,35 m.
Explicação:
[tex] \sin 20^\circ = \dfrac{1,83~m}{x} [/tex]
[tex] x = \dfrac{1,83~m}{\sin 20^\circ} [/tex]
[tex] x = 5,35~m [/tex]
A movie started at 22 45. The movie ended at 01 32 the next day. Calculate the duration of the movie.
Answer:
2 hours and 47 minutes.
Step-by-step explanation:
If it makes it easier then translate it to normal time.
10:45 pm and 1:32 am.
2 hrs and 47 minutes.
Answer:
2 hours and 47 minutes is the duration of the movie.
Step-by-step explanation:
I have calculated it :-)
if f(x)=-2x-3 what is f(r+2) ?
Answer:
[tex]f(x) = - 2x - 3[/tex]
when x is r + 2 :
[tex]f(r + 2) = - 2(r + 2) - 3 \\ = - 2r - 4 - 3 \\ = - 2r - 7 \\ \\ { \boxed{ \boxed{f(r + 2) = - 2r - 7}}}[/tex]
22. Jesse's fish hook was 12 feet below the top of the water. He let out
some of his line, and the hook sunk another 3 feet. What is the depth of the
fish hook now? Write an addition problem, and then give the answer.
9514 1404 393
Answer:
15 ft below the top of the water
Step-by-step explanation:
We can let distances "below the top of the water" be represented by negative numbers. Then the initial height of Jesse's hook was -12 ft. Adding line allowed his hook to sink further:
-12 +(-3) = -15
The depth of Jesse's hook now is 15 feet below the water surface.
Is -2.75 a whole number, integer or ration number
Answer:
Integer
Step-by-step explanation:
Look it up it will give you an answer
Which expression is equivalent to the given expression?
(10c6d-5)(2c-5d4
Answer:
if you simplify the expression you will get
[tex]20c^{7}d - 20 {c}^{6} {d}^{2} [/tex]
Answer:
20c/d
Step-by-step explanation:
I got it right. Hope this helps.
