Answer:
[tex]k=14[/tex]
Step-by-step explanation:
Given:
[tex]x^{2}+kx+49 = 0[/tex]
[tex]x = -7[/tex]
Substitution can be used to find the value of [tex]k[/tex]:
[tex](-7)^{2}+(-7)k+49 = 0[/tex]
[tex]49-7k+49 = 0[/tex]
[tex]98 -7k = 0[/tex]
[tex]k = 14[/tex]
Hope this helps :)
Please I will give brainylest if the answer is correct
Answer:
a^n +3
Step-by-step explanation:
simpify: a^na^3:\quad a^{n+3}
a^{n+3}
There were 42 mangoes in each crate. 12 such crates of mangoes were delivere to a factory. 4 mangoes were rotten and had to be thrown away. The remaining mangoes were packed into boxes of 10 mangoes each. How many mangoes were left after the 4 rotten ones were thrown away? * Your answer
Answer: 50
Step-by-step explanation: 42x12=504. 504-4=500. 500/10=50.
Answer:
Total Mangoes = 50
Rotten = 46
Step-by-step explanation:
50 divided by 10 = 5.
50 minus 4 is 46.
What is 6^4 x 6 1/4????
Answer:
8100
Step-by-step explanation:
Question 10
Evaluate 122 – 3 [4 () – (18)].
Answer:
here is the answer -(12)/(-3)
Step-by-step explanation:
PLEASE MARK BRAINILIEST!
state the value of digit 2 in the number 1326g , in base ten
Answer:
20
Step-by-step explanation:
2*10
= 20
PLS GIVE BRAINLIEST
Find the perimeter of a rectangular garden that measures 4 yards by
12 yard.
Answer:
it is 48 yards
Step-by-step explanation:
what You would do is this 12x4, which would equal 48
Answer:
32 yards
Step-by-step explanation:
First we need to know what perimeter is. It's similar but not the same as area. The perimeter is the length around the entire area, or in this case, a garden. We know 2 side lengths of the garden and because it is a rectangle we just have to add another width and length the same as these and add them all together.
4 + 4 + 12 + 12
8 + 24
32
So, the perimeter of the rectangular garden is 32 yards.
Hope this helps! If you have any additional questions please don't hesitate to ask me or your teacher to be sure you master the subject. :) Stay safe and please mark brainliest!
What is the area of the triangle?
10 km
10 km
square kilometers
Hey everyone I need help on the questions please!:)
Answer:
a. 1/2
b. 1 hair cut
c. 2.5
Step-by-step explanation:
4/8 divde by 4 to simplify and that gets you 1/2
8/4 is 2 so he does one hair cut every two hours
so you know how many he can do in 2 hours so add it up. It’s going to be 2 people in four hours so it will be half a hair cut in 5 hours
I need help with the range
Answer:
(-2, 10]
Step-by-step explanation:
The range is the y values that the equation/line covers.
The line's lowest point is -2 and the line's highest point is 10. The value is not defined at -2 since there is an open circle. The value is defined at 10 since there is a closed circle.
Are these answers right or some wrong? If some wrong plz answer them correct thanks!
You are wrong.
1, 2, 3 and 4 are correct.
5. 75%
6 is also correct
7. 100%
8. 50%
There are 2 blue, 3 green and 10 red marbles in a bag. What is the Probability of pulling a red marble, replacing it, then pulling a blue marble?
Answer:
i think its this.. ._.
Step-by-step explanation:
if red is 10, and pulling a blue is 2, there is a 10/15 chace you will get a red, but a 2 out of 15 chance you will get a blue
What does 24 square root using perfect squares look like?
Answer:
4.899
Step-by-step explanation:
4.899×4.899=24
I know cause I googled :)
WILL GIVE BRAINLIEST!!!!!!1
Consider this system:
3x + 1/2y = 3
6x - y = 2
Which of the following operations would eliminate the y-terms if the two equations were added together afterward?
A. Multiply the first equation by -2.
B. Multiply the first equation by 2.
C. Multiply the second equation by -2.
D. Multiply the second equation by 2.
Answer:
B. Multiply the first equation by 2
hope this helps tell me if you need more :)
Multiply the first equation by 2 then the variable y will be eliminated. Then the correct option is B.
What is the linear system?A Linear system is a system in which the degree of the variable in the equation is one. It may contain one, two, or more than two variables.
Consider this system:
3x + 1/2y = 3 ...1
6x - y = 2 ...2
The operations would eliminate the y-terms if the two equations were added together afterward will be
Multiply the first equation by 2. Then we have
6x + y = 6
6x - y = 2
Add the above equations, then we have
12x = 8
y is eliminated.
More about the linear system link is given below.
https://brainly.com/question/20379472
#SPJ2
use the picture to create a ratio between the football and baseball
Answer:
there are no pics
ya I can't see one
Answer:
3,6 1 to 2
Step-by-step explanation:
Multiply. Answer with a mixed number in simplest form
6 x 3 3/8
Answer: my answer is 20.25
Answer:
20 1/4
Step-by-step explanation:
6/1 × 27/8 = 162/8 = 162 ÷ 8 = 20 1/4
If 25⋅26=n, then which division equation is also true?
n÷26=25
26÷25=n
25÷n=26
25÷26=n
9514 1404 393
Answer:
n÷26=25
Step-by-step explanation:
Starting with the equation ...
25·26 = n
you can divide both sides of it by 26 to get ...
25 = n ÷ 26 . . . . matches choice A
Which of the following numbers is divisible by both 5 and 10
Answer:
5
Step-by-step explanation:
Answer:
1 or 5
Step-by-step explanation:
cuz 1 divided by 5 =5 and 10 divided by with 1 =10
but 5 divided by 1 = 5 and 10 divided by 5 = 2
The expression (x3)(x-15) is equivalent to xn. What is the
value of n?
Answer:
-45 is xn
The x=3 and x=-15 multiply them together which is the answer to xn
CORRECT ANSWER GETS BRAINLIEST!!!
The least-squares regression equation
y = 120 + 40x can be used to predict the cost of renting a backhoe for x hours. Suppose it costs $325 to rent a backhoe for 5 hours.
Calculate the residual for renting the backhoe for 5 hours, to the nearest hour.
The residual is _____
Answer:
5
Step-by-step explanation:
just did on edge
The residuals is $5
What is Equation?Two or more expressions with an Equal sign is called as Equation.
Given, The least-squares regression equation
y = 120 + 40x
This equation can be used to predict the cost of renting a backhoe for x hours
If it costs $325 to rent a backhoe for 5 hours.
We need to Calculate the residual for renting the backhoe for 5 hours,
Plug 5 in place of x in equation
y=120+40(5)
y=120+200
y=320
Since the The observed value is $325.
To find residual for renting the backhoe for 5 hours
We have to separate 320 from 325
325-320=5
Hence the residual is 5.
To learn more on Equation:
https://brainly.com/question/10413253
#SPJ2
how do you solve
x-3y=-5
x+3y=1
Answer:
I got you fam
Step-by-step explanation:
First One:
x -3y = -5
x = -5 + 3y
Or
x -3y = -5
-3y = -5 -x
y = 5/3 + x/3
Second one:
x +3y = 1
x = 1 - 3y
Or
x + 3y = 1
3y = 1 -x
y = 1/3 - x/3
Jay is 3 years less than 4 times Nelly’s age ( n ). Which expression represents Jay’s age?
Answer:
9
Step-by-step explanation: 3x4= 12 -3=9
Answer:
what's nelly's age
Step-by-step explanation:
4x divided by 3?
Dena has 6.25 inches of blue ribbon, 0.375 foot of orange ribbon, and 0.5 yard of green ribbon. How many inches of ribbon does Dena have altogether?
Show or explain your work through either decimal or fractional calculation.
Answer:
28.75inStep-by-step explanation:
We are expected to convert all units to inches in this problem
Step one:
given data
blue ribbon=6.25 inches
orange ribbon=0.375 foot
green ribbon=0.5 yard
Step one:
convert orange ribbon=0.375 foot to inches
1 ft = 12 in
0.375ft=xin
cross multiply
x=12*0.375
x=4.5in
orange ribbon= 4.5in
convert green ribbon yd to inches
1 yd = 36 in
0.5 yd=xin
cross multiply
x=36*0.5
x=18in
green ribbon= 36in
total lenght in inches =6.25+4.5+18
=28.75in
Math Glass Worksheet (A lot of points)
Can someone tell me what to put in the rest of these columns
Answer:
You can chose 3 in 5 :o
Step-by-step explanation:
1
-3
р
II
03
True
O False
Answer:
i dont understand it
Step-by-step explanation:
WILL GIVE BRAINLIEST
We Know that in geometry the Cos/Sin = Cotangent. And the abbreviation for this is cotø
I need help for algebra 1, solve for the variable
2x-y=y
(solving for x)
Answer:
x = y
Step-by-step explanation:
Given
2x - y = y ( add y to both sides )
2x = 2y ( divide both sides by 2 )
x = y
(a) (4,4) is a point on a locus whose equation is y2 = kx. Show that (16,8) is another point on the locus.
(b) (2,3) is a point on a locus whose equation is 5x +by= 16. Show that (0,8) is another point of the locus
Step-by-step explanation:
plug the coordinate points into the equations and solve for the remaining variable.
b) (2,3) - 5(2) + b(3) = 16
10 + 3b = 16. 3b= 6. b = 2
(0,8) - 5(0) + 2(8) = 16. 0+ 16 = 16. ☆
a) (4,4) assume based on results you meant y squared. (y^2)
(4)^2 = 4k. 16 = 4k. k = 4
(8)^2 = 4(16). 64 = 64. ☆
Answer:
Please check the explanation.
Step-by-step explanation:
a)
Given
(4,4) is a point on a locus whose equation is y²=kx
Putting (4, 4) in y²=kx
(4)² = k(4)
16 = 4k
k = 16/4
k = 4
Checking the point (16, 8) on the locus
y²=kx
Putting (16, 8) and k =4 in y²=kx
y²=kx
(4)² = 4×4
16 = 16
L.H.S = R.H.S
Therefore, (16, 8) is another point on the locus.
b)
Given
(2, 3) is a point on a locus whose equation is 5x +by= 16
Putting (2, 3) in 5x +by= 16
5x+by=16
5(2)+b(3)=16
10+3b=16
3b=6
b=6/3
b=2
Putting (0, 8) and b=2 in 5x +by= 16
5x +by= 16
5(0)+2(8)=16
0+16=16
16=16
L.H.S = R.H.S
Therefore, (0, 8) is another point on the locus.
Find the product of 3 1/5 and 7 1/4. Express your answer in simplest form.
Answer:
Step-by-step explanation:
3 1/5 * 7 1/4= 23 1/5
Pls help !!! I've already failed it twice this is my last try please help there's other questions on my account.
Answer:
A, C
Step-by-step explanation:
Maybe A and C because its reflecting in the opposite direction which is 180
8
The statement “x > 4 and 2x – 4< 6" is true when x is
equal to
A1
B 10
C 5
D 4
Answer:
the new year will have the other
Step-by-step explanation:
u3ueufjfjtjfjfj was calling for an accident that killed