Answer: -77
Step-by-step explanation:
2x - 1 = 13
Add 1 on both sides
2x = 14
x = 7
Substitute x to 7
-(7)^2 -4(7)
Solve
-49 - 28 = -77
Answer:
-77
Step-by-step explanation:
-x^2-4x to [tex]-7^{2}[/tex]- ( 4 × 7)
-7^2 - ( 4 × 7)
-49 - ( 4 × 7)
-49 -28
=
-77
Angle XYZ = 2X ° and angle PQR = (8X -20)° if angle XYZ and angle PQR or supplementary find the measure of each angle angle XYZ = ?
Answer:
angle XYZ = 40°
Step-by-step explanation:
given,
angle XYZ = 2x°
angle PQR = (8x-20)°
now,
2x+8x-20° = 180°{being supplementary angle}
or, 10x - 20° = 180°
or, 10x = 180°+20°
or, x = 200°/10
or, x = 20°
again,
angle XYZ = 2x°
= 2× 20°
= 40°
That passes through (-4,0) and is parallel to y= -2x+1
Answer:
y = -2x - 8
Step-by-step explanation:
Parallel lines always have the same slope. Here, it is -2.
So, our equation so far looks like this:
y = -2x + b, where b is the y-intercept
We need to find b. We know our line passes through (-4, 0), so let's plug -4 in for x and 0 in for y:
y = -2x + b
0 = -2 * (-4) + b
0 = 8 + b
b = -8
Since b = -8, our equation is thus y = -2x - 8.
~ an aesthetics lover
solve the equation −12=y−11
Step-by-step explanation:
this is your answer..........
Sandra signed up for the gym during the spring special. Her credit card was charged $220.87. Is this the correct amount? Explain.
Answer:
No the she should have been charged $203.88 the reason is if you times 12 by 16.99 you will get 203.88 not 220.87
The amount in credit card is enough to pay 12 months gym charge.
Given that, the charge for one month is $16.99.
What is an equation?In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.
Number of months = 12
Let the total charge for 12 months be x.
Now, x = 16.99×12
= $203.88
Therefore, the amount in credit card is enough to pay 12 months gym charge.
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Two angles are supplementary if the sum of their measures is 180.
The afternoon temperature in Biscoff Bay was – 2°F. By midnight, a warm front moved in and the temperature rose to 11°F. What was the change in temperature from afternoon to midnight? To solve the problem, Ross subtracted 11–( – 2) and came up with an answer of 13°F. Is Ross correct? Why or why not?
Answer:
Ross is correct. He is right because if you do 11- (-2) the double negatives turn into a positive and the answer is 13.
The answer is "Yes", Ross is right, and the temperature change will be 13 °F.
What are arithmetic Operations?The four fundamental operations of arithmetic are addition, subtraction, multiplication, and division of two or even more items.
Included in them is the study of integers, especially the order of operations, which is important for all other areas of mathematics, notably algebra, data management, and geometry.
As per the mentioned data in the question,
The afternoon temperature in Biscoff Bay = -2 °F
The temperature rose at midnight = 11 °F
Then, the change in temperature will be,
It is changing from -2 °F to 11 °F then,
= 11 - (-2) = 13 °F
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5t-9=-3t+7. I need help this is equations variables both sides
Answer:
t = 8
Step-by-step explanation:
5t - 3t - 9 = 7
5t - 3t = 7 + 9
2t = 7+ 9
2t = 16 <- divide
Answer"
t = 8
Hope this helped
Brainliest is appreciated/
Hey there!☺
[tex]Answer:\boxed{t=2}[/tex]
[tex]Explanation:[/tex]
[tex]5t-9=-3t+7[/tex]
Let's start by adding 3t to both sides of the equation.
[tex]5t-9+3t=-3t+7+3t\\8t-9=7[/tex]
Now let's add 9 to both sides of the equation.
[tex]8t-9+9=7+9\\8t=16[/tex]
Now let's divide both sides by 8.
[tex]\frac{8t}{8} =\frac{16}{8}[/tex]
Now let's simplify 16/8.
[tex]16/8=2[/tex]
[tex]t=2[/tex]
Hope this helps!
can you help please??
Step-by-step explanation:
this relation is not a function cuz each x pair (domian) has only one image in y pair (codomain) so we will have all the ×-axis pairs meeting with y-axis in only one point as they have one image as this is the rule of having a function so what in front of us the positive part of x-axis has two images in y-axis
u can knew it by another way draw a vertical line and if it meets in two point or more than one then the relation is not a function s o if we draw a vertical line in the right part of the graph it will meats in two points then not a function
the domain is all the pairs of this relation taken in x-axis which are [0,infinity[ and range is the y-axis images if the fomain in x-axis which are ]-infinity, infinity[
if it takes jessica 28.9 seconds to walk to the bus stop and there are 260 days she takes the bus to school a year. Then how many minutes a year does she spend walking to the buss stop? Round to the nearest minute
Answer:
Step-by-step explanation:
If there are 260 days and she takes 28.9 seconds to get to the bus stop, then that means 260 * 28.9 = 7514 seconds to get to the Stop. 7514 / 60 = number of minutes which is 125 rounded
-8 and 8 are ___; they are both 8 away from zero.
Two numbers that are the same distance from zero are called opposites.
-8 and 8 are Opposites.
intergers: -6+3 plz help me and plz show how you figured it out i can’t
Answer:
-3
this diagram might help you ( ◜‿◝ )♡
Answer:
Question : -6 + 3 =?
Answer : -3
can somebody help me please
Answer:
D. X = 7
Step-by-step explanation:
See image for explanation
For the function g(x) = x – 2x^2, find g (–3) + 13
Answer:
g( - 3) + 13 = - 2Step-by-step explanation:
g(x) = x - 2x²
To find g( - 3) + 13 substitute the value of x that's - 3 into g(x) and add 13 to it
We have
g( - 3) + 13 = - 3 - 2(-3)² + 13
= -- 3 - 2(9) + 13
= 3 - 18 + 13
We have the final answer as
g( - 3) + 13 = - 2Hope this helps you
Need Help!! because im confused
Answer:
3g+20
Step-by-step explanation:
Because Milena wants to have 3 cups per each guest and then she wants an additional 20 more.
Answer:
C. 3g+20
Step-by-step explanation:
The answer here is 3g+20.
Their will be an additional 20 cups of punch, which is addition.
distance between each pair of points
(0.4). (8. -2)
Answer:
10
Step-by-step explanation:
Sqrt((-8)^2+((-2)-4)^2)
The relationship between money earned and hours worked is linear joke and puetz the slope between 430 and 1290 that computes the slope between 4:30 and 10 75 how do the two slopes compare
Answer:
操你bit子Step-by-step explanation:
嗨，你好吗
. If T is the midpoint of SU, what are ST, TU, and SU?
Step-by-step explanation:
We have ST=5x, TU=3x+32 and they're equal if T is the midpoint:
5x = 3x + 32
2x = 32 x = 16
ST = 5x = 80
So TU = 80
and SU=160
Answer: Second choice
Ciana worked 5 hours on Saturday and
6.5 hours on Sunday. If she earns $7.00
an hour how much did she earn?
Answer: $80.50
Step-by-step explanation:
Hey! This is my first question. 35 points, it's not complicated. I'm trying to get my grade up and need to have this explained.
Answer: You should try copying and pasting the question onto google. Someone may have answered the question or something similar on another website.
Write 6.45 as a mixed number in simplest form.
Answer:
6 9/20
Step-by-step explanation:
6.45=645/100 = 129/120
= 6 9/20
Louisa has 4 yards of fabric. She uses 2/5 yard of fabric to make a doll dress. How many doll dresses can Louisa make with the fabric? Choose the number line model that shows the answer. A. Number line from 0 to 4 is divided into 20 equal parts. Number line is grouped into 4 equal parts. B. Number line from 0 to 4 is divided into 20 equal parts. Number line is grouped into 8 parts. C. Number line from 0 to 4 is divided into 20 equal parts. Number line is grouped into 5 equal parts. D. Number line from 0 to 4 is divided into 20 equal parts. Number line is grouped into 10 equal parts.
Answer:
I believe the answer is D. Number line from 0 to 4 is divided into 20 equal parts. Number line is grouped into 10 equal parts.
Step-by-step explanation:
She can make 10 dresses if you split the number line into 20 parts and find 2/5. Therefore, it would then be grouped into 10 parts, each part 2/5ths of a yard.
HELP ME PLEASE!! Find R and theta with the coordinates (-3,7).
Answer:
Since r is the distance from the origin to (x,y), it is the magnitude r=√x2+y2. Alternatively, from the equation (1), one can calculate directly that x2+y2=r2cos2θ+r2sin2θ=r2(cos2θ+sin2θ)=r2.
Step-by-step explanation:
Which term has an expression with a base of 8
Answer:
8^4
Step-by-step explanation:
A 'base' is a number with an exponent.
The expression [tex]8^4[/tex] has the base 8.
We need to find which of the given term has an expression with a base of 8.
What is base of an expression?A numerical system's number basis, or base for short, informs us of the particular or distinctive symbols and notations it employs to express a value. The number used to construct a power with an exponent, such as the 3 in 3², is known as the base.
In the expression [tex]8^4[/tex], 8 is the base and 4 is the power or exponent.
Therefore, the expression [tex]8^4[/tex] has the base 8.
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evaluate. (-5)^2 - (-2)^4
Answer:
9
Step-by-step explanation:
(-5)^2=25
(-2)^4=16
so therefore...25-16=9
Find the ratio of 3 Km 300 m
Answer:
3km : 300m
3000 : 300
10 : 1
question 7 pls help i need help pls
Answer:
112
Step-by-step explanation:
m<pmo + m<qmn = m<pmn 90+22=112
Answer:
112
Step-by-step explanation:
add 90 and 22
Please help!! 2/3x-7=x
Answer:
-21
Step-by-step explanation:
Answer:
i know its already been answered but yes, it is -21
Step-by-step explanation:
hope it helps, can anyone look at my most recent question? i'll appreciate it
Solve x − 2y = 3 for x.
Answer:
[tex]x=2y+3[/tex]
Step-by-step explanation:
So we have the equation:
[tex]x-2y=3[/tex]
And we want to solve for x. In other words, we want to isolate the x-variable.
So, add 2y to both sides of the equation.
[tex](x-2y)+2y=(3)+2y[/tex]
On the left, the 2y cancel. Simplify the right:
[tex]x=2y+3[/tex]
And we're done!
Answer:
x = 3 + 2y
Step-by-step explanation:
This is the answer because:
1) First, you have to isolate x, in order to isolate x you have to bring x to the end of the equation.
2) Then, you have to add 2y to both sides of the equation.
Another way you can think of this is:
1) If you add 3 + 2y you would figure out the answer because if you want to find x for a subtraction equation, you can add the answer to the equation with the number.
For example, x - 20 = 10, now to figure this equation out, you can either isolate the x, or you can add the answer in the equation with the remaining number in the equation.
Hope this helps!
What is the domain?
(0,1), (-1, -1), (2, 4), (1, -1)
Hey there! I'm happy to help!
The domain is all of the x-values of a function.
So, we take all of the x-values from our points.
0,-1,2,1
To express the domain, you order the numbers from least to greatest and put it in brackets, so the domain is {-1,0,1,2}.
Have a wonderful day! :D
Answer:{-1,0,1,2}
Step-by-step explanation:
4. Find the width of a rectangle if the perimeter is
14.00 inches and the length is 3.6 inches.
Answer:
The width of the rectangle is 3.4 inches
Step-by-step explanation:
3.6 inches = length LxW=Area
W= width
Perimeter= 2x(Length)+2x(Width) 2x3.6=7.2
7.2+2(W)=14.00 subtract 7.2 on both sides 14.00-7.2=6.8
2(Width)=6.8 divide both sides by 2 6.8/2=3.4
So width of rectangle is 3.4