Answer:
7. 24
8. -1
9. 28
10. 24
Step-by-step explanation:
substitute values into equations. don't forget the brackets :))
7. 3x + 2y2 Let x = 4, y = 3
= 3(4) + 2(3)2
= 12 + 12
= 24
8. (x + 2)2 - (3x - 2) - 4 Let x = 3
= ((3) + 2)2 - (3(3) - 2) - 4
= (5)2 - (9 - 2) - 4
= 10 - 9 + 2 - 4
= -1
9. x + 2y - 3z + xyz Let x = 4, y = 3, z = 2
= (4) + 2(3) - 3(2) + (4)(3)(2)
= 4 + 6 - 6 + 24
= 28
10. xyz Let x = 4, y = 2, z = 3
= (4)(2)(3)
= 24
What is the the simplified form of the following expression? 5 ( t - 1 ) (please see picture below to find your answer choices)
Answer:
5t-5
Step-by-step explanation:
f(x)=22x+14, find f(5)
Answer:
f(5) = 124
Step-by-step explanation:
Step 1: Define
f(x) = 22x + 14
f(5) = x = 5
Step 2: Substitute and evaluate
f(5) = 22(5) + 14
f(5) = 110 + 14
f(5) = 124
I've been staring at this for 15mins plz help
Answer:
answer is C because it is
Solve x^2 – 10x = -21
Answer:
Step-by-step explanation: x^2-10x+21=0
(x-7)(x-3)
x = 3,7
Help please! sssssssssssssss
Answer:
UT=17 because both UT and RU are the same length, same with QU and US
Step-by-step explanation:
A group of 6 hikers are preparing for a one week trip. All of the group's supplies will be carried by the hikers in
backpacks. The leader decides that each hiker will carry a backpack that is the same fraction of weight to all the other
hikers' weights. This means that the heaviest hiker would carry the heaviest load. The table below shows the weight of
each hiker and the weight of the backpack
Complete the table. Find the missing, amounts of weighit by applying the same value of the ratio as the first two rows.
Backpack Weight
Hiker's Weight
152 15.402
Total Weight (lb.)
14 1b, 802
107 lb, 10 oz
10 lb. 4 02
129 lb. 15 02
68 10.40
8 lb. 12 oz
10 lb
Answer:
Step-by-step explanation:
1 oz = 0.0625 lb
Ratio of the hiker an backpack in the first row = 152.25 lb : 14.5 lb
= 21 : 2
Hiker's weight Backpack weight Total weight (in lb)
1). 152 lb 4 oz 14 lb 8 oz (152+14) lb (4+8) oz = 164lb 12oz
= 16.75 lb
2). 107 lb 10 oz 10 lb 4 oz (107+10) lb (10+4) oz = 117 lb 14 oz
= 117.875 lb
3). 129 lb 15 oz [tex]\frac{129.9375}{x}=\frac{21}{2}[/tex] (129+12) lb (15+6)oz = 141 lb 21 oz
x = 12.375 lb = 142.3125lb
x = 12 lb 6 oz
4). [tex]\frac{x}{8.75}=\frac{21}{2}[/tex] 8 lb 12 oz (8 + 91) lb (14+12) oz = 99 lb 26 lb
x = 91.875 lb = 100.625 lb
x = 91 lb 14 oz
5). [tex]\frac{x}{10}=\frac{21}{2}[/tex] 10 lb (105 + 10) lb = 115 lb
x = 105 lb
On a map the distance between Goffstown and Wilkstown is 5.5 cm.
The scale on the map is 1 cm
50 km.
Which is the actual distance between Goffstown and Wilkstown?
O A. 9.1 km
B. 10.5 km
O C. 55.5 km
D. 250.5 km
O E. 275 km
Answer:
275 km
Step-by-step explanation:
5.5 x 1 cm: 5.5 x 50 km
5.5 km : 275 km
Help!! which expression is equivalent to (5^3)^-2?
A.1/5^3
B. -1/5•5•5•5•5•5
C. 5^3
D. 1/5•5•5•5•5•5
Answer:
D
Step-by-step explanation:
(5³)^-21/(5³)²1/5^61/5·5·5·5·5·5Answer:
1/ ( 5*5*5*5*5*5)
Step-by-step explanation:
(5^3)^-2
We know that a^b^c = a^ ( b*c)
5^(3*-2)
5^ -6
We know that a^ -b = 1/ a^b
1/5 ^6
1/ ( 5*5*5*5*5*5)
Which of the following is a characteristic of Euclidean geometry?
A. No lines are straight.
B. The sum of the measures of the angles in a triangle is greater than 180 degrees.
C. The parallel postulate is true.
D. The sum of the measures of the angles in a triangle is less than 180 degrees.
Answer:
b
Step-by-step explanation:
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Which rate describes a unit price?
$1.00 for 2 lemons
$3.00 for every pound
$4.00 for 3 slices of pizza
$6.00 for every 6 bottles
Answer:
$3 for every pound....
Answer:it would be b $3.00 for every pound
explanation:A unit price is something for each not multiple
BRAINLIEST WILL BE MARKED
Another name for the domain is:
output
input
dependent variable
relationship
Answer:
B. input
Step-by-step explanation:
Last one I promise . I am NOT GOOD AT MATH
Answer:
60 seconds/1 minute
Step-by-step explanation:
We are trying to convert 20.1 meters/second to per minute. Since we know there's 60 seconds in a minute, we would use the conversion factor 60 seconds/1 minute in order to find greyhounds speed per minute
Ori needed at least $1.47 in postage to mail an envelope to his cousin overseas. If x represents the number of $0.44 cent stamps he has and y represents the number of $0.10 cent stamps he has, the inequality representing the number of stamps he can use to mail the envelope is 0.44x+0.10y≥1.47. If Ori uses all 3 of the $0.44 cent stamps he has, what is the minimum number of $0.10 stamps he needs to use?
The minimum number of $0.10 stamps he needs to use is 1 stamp.
What is Inequality?Mathematical expressions with inequalities are those in which the two sides are not equal. Contrary to equations, we compare two values in inequality. Less than (or less than or equal to), greater than (or greater than or equal to), or not equal to signs are used in place of the equal sign.
Given:
let x represents the number of $0.44 cent stamps
and, y represents the number of $0.10 cent stamps
Ori uses all 3 of the $0.44 cent
=0.44x3
= 1.32
Then, 1.47-1.32= 0.15
We have at least 2 dimes for the equation
=0.44(3)+0.10(2)≥1.47
= 1.32+0.20≥1.47
= 1.52≥1.47
Then, number of $0.10 stamps he needs to use
= 0.15/ 0.10
= 1.5
= 2 or 1 stamps
Learn more about inequality here:
https://brainly.com/question/28823603
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Answer:
2.
Step-by-step explanation:
Please help with Algebra
Answer:
C) 6
Step-by-step explanation:
I converted the equation into slope-intercept form and then identified the y-intercept.
[tex]4x+2y=12\\\\4x-4x+2y=12-4x\\\\2y=12-4x\\\\\frac{2y=12-4x}{2}\\\\ y=6-2x\\\\y=-2x+6\\\\y=-2x+\boxed{6}[/tex]
C should be the correct answer.
Hope this helps.
Answer: 6
Step-by-step explanation: The y-intercept is a point where a line
crosses the y-axis and all y-intercepts have an x-coordinate of zero.
So to find the y-intercept of this line, we can plug a 0 in for x.
So we have 4(0) + 2y = 12.
So 2y = 12 which means that y = 6.
So the y-intercept of this line is 6.
m<1 = 4x + 15, and m<2 = 6x-5, what is m<1
Answer:
rvg g rtb rg gt ggw
Step-by-step explanation:
g wgrgr wrgf r
PLZ HELP this doesnt make sense
Answer:
No.
If two rectangles are congruent, it means they are the exact same shape and size.
I have uploaded an image with this answer. In the image, you can see two rectangles with the same perimeter. However, they are not congruent because they are not of the same size (even though they are of the same shape - a rectangle).
Hence, two rectangles may not be congruent if they have the same perimeter.
Luke shade 20 squares on his hundredths grid. Bekka shaded 30 squares on her hundredths grid.
Answer:
50 hundredths
Step-by-step explanation:
20 + 30= 50
What is the solution of 6x= 15
Answer:
2.5
Step-by-step explanation:
When a variable is next to a number (coefficient) it means you need to multiply. In this equation 6x are next to eachother.
Because we don't know what x is, we have to work backwards.
The opposite of multiplying is dividing, so here we can do...
15/6 and that equals 2.5
To check you replace x with 2.5 like so,
6(2.5)= 15 and it is true!
Hope this helps and have a great day!
2. If the bill was $138, how far were you towed? Explain.
Answer:
It depends on how long the measurement is for each amount of money for example every 5 miles pay $12 so it would be which would be 11$.5 and the equation would be $12/5mi and if he had to pay $138 then it shows that he went 11.5 mi
Step-by-step explanation:
What is the standard position angle
Answer:
A would be 35
Step-by-step explanation:
if that area is at a 90 digre angle then do 90- 55 then you get your anwser.
what is an absolute value of an interger
Answer:
its the distance it has from 0 on the number line.
Step-by-step explanation:
Show the work
20= n/4
Answer:
n = 80
Step-by-step explanation:
20= n/4
Multiply each side by 4
4 * 20 = n/4*4
80 = n
Answer:
n = 80
Step-by-step explanation:
Write it out: [tex]20 = \frac{n}{4}[/tex] Multiply each side by 4, so it now looks like this: 80 = nI hope this helps!
6y + 9 = 33 solve for y
Answer:
-3.5
Step-by-step explanation: 33/6= 5.5 5.5-9= -3.5
Answer:
y = 3
Step-by-step explanation:
1. Subtract 33 by 15 (9+6)
2. You get the answer 18
3. 6 times y = 18
4. y = 3 ; therefore y equals 3.
5. Y = 3
Solve the system of linear equations by substitution. 11x – 7y = -14 x – 2y = -4
Answer:
x = 0 & y = 2. Hope this helped <3
The value of x and y from the equation is 1/6 and 5/6 respectively
x = 1/6
y = 5/6
What is an Equation?
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the first equation be A
11x - 7y = -4 be equation (1)
Let the second equation be B
-14x - 2y = -4 be equation (2)
On simplifying , we get
Multiply equation (2) by 7 , we get
-98x - 14y = -28 be equation (3)
Multiply equation (1) by 2 , we get
22x - 14y = -8 be equation (4)
Subtract equation (4) from equation (3) , we get
-120x = -20
Divide by 120 on both sides , we get
x = 1/6
Now , substituting the value of x in equation (1) , we get
11x - 7y = -4
11 ( 1/6 ) - 7y = -4
Adding 7y on both sides , we get
7y - 4 = 11/6
Adding 4 on both sides , we get
7y = 11/6 + 4
7y = 35/6
Multiply by 7 on both sides , we get
y = 5/6
Hence , the value of x is 1/6 and value of y is 5/6
To learn more about equations click :
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the absolute value of negative eight
Answer:8
Step-by-step explanation:take off the negative symbol
Plz help, I will give you brainlest! Thx!
Answer:
(0,-10)
Step-by-step explanation:
Answer:
your answer Is 3
Step-by-step explanation:
You do y2-y1 and x2-x1
that gives you -2-22/-4-4 which leaves you with
-24/-8
and that’s 3
It was a very freaky weather day. The temperature started out at 9°C in
the morning and went to -13°C at noon. It stayed at that temperature for six
hours and then rose 7°C. Which ADDITION expression shows the change in
temperature
9 + 13 + 7
9 + (-13) - 7
O 9-13 +7
9 + (-13) + 7
Answer:
9+-13+7 so the answer is the last one
Step-by-step explanation:
jsjsjsjjsjs i need help with hw once again. first person to answer gets brainliest ;)
Answer:
7 degrees Fahrenheit
Step-by-step explanation:
-3 + 11 = 7
It's the same as
11-3= 7
27 divided by 3"2 please show working out
Answer:
3
Step-by-step explanation:
If the speech comma are suppose to represent 3 Squared then here are the steps:
3×3=9
27÷9=3
Hope this helps you :))
Is negative 4.55 irrational?
Answer:
no
Step-by-step explanation:
it can be made into a fraction
