Show your solution follow the steps need an answer, please need an answer, please.
Answers
Answer:
Step-by-step explanation:
27 ) 2x² - x - 1 = 0
2x² - 2x + x - 1 = 0
2x ( x - 1) + (x - 1) = 0
(x - 1)(2x + 1) = 0
x - 1 = 0 ; 2x + 1 = 0
x = 1 ; 2x = -1
x = -1/2
x = 1 ; -1/2
Option b
28) Area of a rectangle = 24 cm²
length * width = 24
(3x +2 )(2x -1) = 24
3x(2x -1) + 2(2x - 1) = 24
3x *2x - 3x *1 + 2*2x - 2*1 = 24
6x² -3x + 4x - 2= 24
6x² + x - 2 -24 = 0
6x² + x - 26 = 0
6x² -12x + 13x - 26 = 0
6x(x - 2) + 13(x - 2) = 0
(x -2)(6x +13) = 0
x = 2 {Ignore 6x + 13 as it gives negative value}
length = 3x + 2 = 3*2 + 2 = 6 + 2 = 8 cm
Width = 2x - 1 = 2*2 - 1 = 4 - 1 = 3 cm
29) Area of square = 900 cm²
Side² = 900
(5x)² = 900
25x² = 900
x² = 900/25
x² = 36
x = √36 = √6*6
x = 6 cm
30) base = b cm
height = b + 2
Area of triangle = 24 cm²
[tex]\dfrac{1}{2}base*height = 24\\\\\dfrac{1}{2}*b*(b+2) = 24\\[/tex]
b(b + 2) = 24*2
b² + 2b = 48
b² + 2b - 48 = 0
b² - 6b + 8b - 48 = 0
b(b - 6) + 8(b - 6) = 0
(b - 6) (b + 8) = 0
b - 6 = 0 {Ignore b +8 = 0 as it gives negative value}
b = 6 cm
height = 6+ 2 = 8 cm
Related Questions
solve pls brainliest
Answers
Hey there!
39 = - u / 6
MULTIPLY 6 to BOTH SIDES
39(9) = (-u / 6)(6)
CANCEL out: the RIGHT side
KEEP: the LEFT side because it helps solve for the u-value
NEW EQUATION: -u = 234
DIVIDE -1 to BOTH SIDES
-1u / -1 = 234 / -1
CANCEL out: -1 / -1 because it gives you 1
KEEP: 234 / -1 because it gives you the result of the u-value
NEW EQUATION: u = 234 / -1
SIMPLIFY IT!
u = -234
Therefore, your answer is: [u = -234]
Good luck on your assignment and enjoy your day!
~Amphitrite1040:)
-234
[tex]u = ( - 6) \times 39 = - 234[/tex]
Please help me on this thank you I’ll give brainliest
Answers
Answer:
Eh, you're not getting any help since you lied about "giving brainliest".
Step-by-step explanation:
5.5 minutes = 330 seconds
A. True
B. False
Answers
Answer:
True
Step-by-step explanation:
330 Seconds = 5.5 Minutes = 5 Minutes and 30 Seconds
Answer:
False :-
Step-by-step explanation:
5 mins = 300 secs
What is the slope of 3x+4y=−2?
Answers
Answer:
subtract the 3x from one side and put in the other
4y = -3x -2
then divide both sides by 4
y= -3/4x -1/2
so the slope is-3/4
What two numbers multiply to equal 20 but when added equal 12
Answers
Answer:
Two and ten.
Step-by-step explanation:
Answer:
2 and 10
Step-by-step explanation:
2 +10 = 12
And 2×10 = 20
Sarina rounded a number to the nearest whole number and got 7.
which number could be the number Sarina rounded to the nearest whole number?
Answers
Swimming Pool On a certain hot summer's day, 492 people used the public swimming pool. The daily prices are $1.50 for children and $2.50 for adults. The receipts for admission totaled $1060.00. How many children and how many adults swam at the public pool that day?
There were ______ children at the public pool.
Answers
Answer:
# of children = 170, # of Adults = 492 - 170 = 322
Step-by-step explanation:
Define C and A as
C = # of children
A = # of adults
Then,
A + C = 492
1.5C + 2.5A = 1060, so that
1.5C + 2.5(492 - C) = 1060
1.5C + 1230 - 2.5C = 1060
-C = 1060 - 1230
C = 170
Find the gradient of the line Joining the points p(-2,6) and Q(3,-2)
Answers
Answer:
[tex] - \frac{8}{5} [/tex]
Step-by-step explanation:
[tex]\boxed{gradient = \frac{y1 - y2}{x1 - x2} }[/tex]
(x₁, y₁) is the 1st coordinate while (x₂, y₂) is the 2nd coordinate.
Gradient of the line
[tex] = \frac{6 - ( - 2)}{ - 2 - 3} [/tex]
[tex] = \frac{6 + 2}{ - 5} [/tex]
[tex] = - \frac{8}{5} [/tex]
Find a point-slope form for the line with slope 1/5 and passing through the point (-3, -8).
Answers
i think it would be y+8=1/5(x+3)
Step-by-step explanation:
point slope formula is y-y1=m(x-x1)
slope=m
m=1/5
Weiming, Farhan and Sam had some comic books.
Weiming and Farhan had 36 comic books altogether.
Weiming had 3 times as many comic books as Farhan.
Sam and Farhan had 60 comic books in total.
(a) How many comic books did Farhan have?
(b) How many comic books did Sam have?
Answers
Answer:
Farhan had 9 comic books
Sam had 51 comic books and lived in his Mother's basement
Step-by-step explanation:
W + F = 36
W = 3F
3F + F = 36
F = 9
W = 27
S + F = 60
S + 9 = 60
S = 51
Plot the following and their opposites on the number line.
Answers
Step-by-step explanation:
Is there a image or any numbers because I can't see any
Answer:
If you are doing it thru edmentum the answer would be -2, 7, 1, 0, -5, 4, -3
Step-by-step explanation:
Hope this helps!!
Four balls of wool will make 8 knitted caps. How many balls of wool Malcome needs if he wants to make 6 caps?
Answers
Answer:
3 balls of wool
Step-by-step explanation:
8/4=2
6/2=3
A. 9/35
B. -9/35
C. -3 8/9
D.3 8/9
Answers
Answer:
D. 3 8/9Step-by-step explanation:
[tex] \frac{x}{y} \\ x \div y \\ - \frac{7}{9} \div - 0.2 \\ - \frac{7}{9} \times - \frac{1}{0.2} \\ \frac{7}{1.8} \\ \frac{7 \times 10}{1.8 \times 10} \\ \frac{70}{18} \\ \frac{35}{9} \\ = 3 \frac{8}{9} \\ [/tex]
What is the slope-intercept form of -8x-2y=-24
Answers
Answer:
y=−4x+12
Step-by-step explanation:
y=−4x+12
Hope that helps
6∧4 − 54² = 0 Solve for all solutions.
Answers
Answer:
-1620
Step-by-step explanation:
Homework help!!!!!!!!
Answers
Answer:
u=-1
Step-by-step explanation:
if you replace with a or b the answer on the left side is actually bigger since it is closer to 0 than -20. same with choice d
choice c makes -12-28 which is a smaller value than -20
-
(-8r^2s^-8)(-3r^-7s^8)
Answers
24r^−5s^0 would be your answer
Find the range of the data set : -5, -6, -1, -3, 6, 10
Answers
Work Shown:
range = max - min = 10 - (-6) = 10 + 6 = 16
The range is the distance from the smallest item to the largest. Use of a number line might help sort out the values to see which is the smallest and largest.
Camille is 7 years older than Donny, and Donny is 4 years younger than Tommy.
Write an expression for the total ages of the three people, in simplest form.
Answers
11
Step-by-step explanation:
first you add seven plus four and then you get your answer that is eleven
PLEASE HELP WITH ALL!!!
Answers
Answer:
3)x=-9
4)x=-2
5)x=-4
6)x=-5
7)x=-12
8)x=-11
Step-by-step explanation:
Plsssss help meeeee
The question and options are in the photo
Answers
Answer:
X = 4
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
Answer:
-5 + 2x = 3
2x = 3 + 5
2x = 8
x = 8 / 2
x = 4
answer is A. x = 4
Step-by-step explanation:
brainliest plz
A 125 mililiter solution of fabric dye contains 5 ml of hydrogen peroxide what percent concentration of hydrogen peroxide?
Answers
What is an acute- angled triangle?
A.) Has 3 acute angles
B.) Has 1 right angle
C.) Has one acute angle
D.) Has 1 obtuse angle
Answers
Answer:
c
Step-by-step explanation:
What algebraic property is T - 6 = -4
Answers
—————————————————————
Answer:
subtraction to addition algebraic expression.
Step-by-step explanation:
Nyashid
Solving n/3 - 1 = 8
N/3-1 = 8 in the
Click New. You should now see the equation
Gizmo.
Step One: This equation has two operations, division an
subtraction. Which operation should you undo first?
Choose (drag) the correct step in the
Gizmo
Step Two: What operation should you undo next?
Choose (drag) the correct step in the Gizmo.
Stop & Check: Substitute your solution for n in the equation and
evaluate. Does your solution produce a true statement? If so, your
answer is correct!
TolutionWhat is the solution to n/3-1 = 8?
Answers
Step-by-step explanation:
first you need to tranfer 1 to RHS do the addition
n/3 = 8+1
=) n/3 = 9
then you need to transfer 3 to RHS and multiply
=> n = 9 x 3
there for n = 27
if there are approximately 1;000 middle schools in nyc then how many total middle schools students are there un the city
Answers
Answer:
Hey you didn't add enough information to answer the question, maybe add some more? Also for this question it will probably be a multiplication or division. Sorry I couldn't help more :)
Step-by-step explanation:
How would I show my work for this?
Answers
Answer:
4x4 = 16 √16=4
Step-by-step explanation:
Answer:
sqrt (16)
= sqrt (4×4)
= 4
Step-by-step explanation:
brainliest plz
Maya, Greg, and Austin sent a total of 81 text messages during the weekend. Austin sent 2 times as many messages as Maya. Greg sent 9 more messages than Maya. How many messages did they each send?
Answers
Austin =36
Set-up an equation to model the problem, then solve that equation:
You bought a magazine for $5 and four erasers. you spent a total of $25. How much did the eraser cost?
Answers
Answer:
$5 + 4x = 25
Step-by-step explanation:
let x = eraser
4 × x = 4x
$5 + 4x = $25
Rory has 5 pounds of ground turkey to make meatballs. He uses 5/8 pound per meatball to make 7 meatballs. How many 1/8 pound meatballs can Rory with the remaining turkey?
Answers
Answer:
4/8
Step-by-step explanation:
because
