Solve
x2 + 2x – 15 = 0
Answer:
x = - 5, x = 3
Step-by-step explanation:
Given
x² + 2x - 15 = 0
Consider the factors of the constant term (- 15) which sum to give the coefficient of the x- term (+ 2)
The factors are + 5 and - 3 , since
5 × - 3 = - 15 and 5 - 3 = + 2, so
x² + 2x - 15 = 0
(x + 5)(x - 3) = 0 ← in factored form
Equate each factor to zero and solve for x
x + 5 = 0 ⇒ x = - 5
x - 3 = 0 ⇒ x = 3
PGR is a right-angled triangle.
Work out the size of angle PGR. Give your answer correct to 1 decimal place.
Answer:
PQR = 67.4 degrees
Step-by-step explanation:
Here, we want to find the size of PQR
to do this, we proceed as follows
As we can see PR is the opposite while PQ is the hypotenuse
The trigonometric identity connecting the two is the sine
sine is the ratio of the opposite to the hypotenuse
sin Q = 12/13
Q = sin^-1(12/13)
Q = 67.4 degrees
Consider the complex number z shown in the graph.
Adding –2i to z results in a shift
.
The resulting number is
–
i.
Answer:
Down
3
2
Step-by-step explanation: on edge trust me.
Answer:
Adding –2i to z results in a shift ✔ down . The resulting number is ✔ 3 – ✔ 2 i.
Step-by-step explanation:
just did it on edge :)
good luck
please mark me brainliest!!
Please help I with give Brainiest if correct
Answer:
Perimeter of the rectangle = 6 x +20
Perimeter of the rectangle = 0 x² + 6 x + 20
Step-by-step explanation:
Step(i):-
Given that the length of the rectangle = 2x +3
Given that the width of the rectangle = x +7
Perimeter of the rectangle = 2(length + width)
Step(ii):-
Perimeter of the rectangle = 2(length + width)
= 2(2 x +3 + x+7)
= 4x +6+2x+14
= 6 x +20
Final answer:-
Perimeter of the rectangle = 6 x +20
Perimeter of the rectangle = o x² + 6 x + 20
Alex took 5 exams in class. His scores on the first four exams were 75%, 68%,
92%, and 100%. What does Alex need to score on the fifth exam to have an
average of 85%?
90
086
94
82
Is it possible for the measure of an exterior angle of a triangle to be equal to the measure of a remote interior angle? Explain
Answer:
The measure of an exterior angle of a triangle is equal to the sum of the measures of the two non-adjacent interior angles. (Non-adjacent interior angles may also be referred to as remote interior angles.) FACTS: An exterior ∠ is equal to the addition of the two Δ angles not right next to it.
It is due at 1:45 plz help
$2500, 4.5%, 2 years
Answer:
si=part
=2500×0.045×2
=225...
the answer is C
I’m still getting this thing up to 100%. NO MATTER WHAT THE COST IS.
Answer:
8 is the answer.
Step-by-step explanation:
Think of 7 positive things and 8 negative things.
O O O O O O O
P P P P P P P P
7 of the positive things will cancel out 7 of the 8 negative things, leaving behind 1 negative things.
#teamtrees #WAP (Water And Plant)
6 Which expression below has a coefficient of 3?
A. 5x + 9
B. 2x-3
C. 28? + 3x – 6
gx+4
( IS IT A. B. C. or D.?)
option c is the correct cofficient of 3
hi can you explain base numbers?
A number base is the number of digits or combination of digits that a system of counting uses to represent numbers. A base can be any whole number greater than 0. The most commonly used number system is the decimal system, commonly known as base 10. ... Binary is the most commonly used non-base 10 system.
Step-by-step explanation:
hope it helps ☺️
Which function has a domain of all real numbers?
Answer:
C
Step-by-step explanation:
This is totally wrong lol
Question 7 of 25
What is the approximate value of sin C?
Answer:
-0.5
Step-by-step explanation:
a number, X, rounded to 1 significant figure is 40. Write the error interval for x
Answer:
40
Step-by-step explanation:
Noor, Layla, and Diego play a trivia game. Noor’s score is -2. Layla’s score is 3/4 of Noor’s score. Diego’s score is 2/3 of Layla’s score. What is Diego’s score?
Answer:
layla is savege score in mobile legends and diego's score in ml is 20
does anyone know how to do this percentage I need help I don't understand how to
Answer: 21
Step-by-step explanation:
Answer:
21$
Step-by-step explanation:
30 divided by 10 = 3 (10%)
3 x 3 = 9 (30%)
PLZ ANSWER QUICK IT WILL HELP A LOT!
Answer:
The answer is b
Step-by-step explanation:
If y is reflected it will cause both to change
Answer:
it's b
Step-by-step explanation:
its b because yeah
I need help!!! I’ll mark you brainliest
This is timed!!
put 3 inside g
4(3) = 12
put 12 inside f(x)
2(12) - 5 = 19
So the answer is 19
Answer:
f
(
g
(
x
)
)
Evaluate
f
(
x
+
3
)
by substituting in the value of
g
into
f
.
f
(
x
+
3
)
=
2
(
x
+
3
)
−
1
Simplify each term.
Tap for more steps...
f
(
x
+
3
)
=
2
x
+
6
−
1
Subtract
1
from
6
.
f
(
x
+
3
)
=
2
x
+
5
Step-by-step explanation:
Round the numbers to the nearest 1000
4682
123361
56500
Answer:
a) 5000
b) 123000
c) 57000
1. Mr. Jones is correcting math test. Here are the scores for the
first fourteen tests he corrected 62, 65,93, 51, 55, 12,79,
85, 55, 72, 78, 83, 91, and 76. Which score does not seem
to fit the data? Explain how the outlier score affects the
mean and the median of the data.
Answer:
12
Step-by-step explanation:
12 doesn't fit the data because it is so much farther from the general average of the others.
12 affects the median because with it, the median is 74. but without 12, the median is 76.
12 affects the mean because with it, the mean is 68.36. but without 12, the mean is 72.69.
A gardener calculates the square footage of two flower beds.
Flower bed
1
is
4
m
−
2
square feet.
Flower bed
2
is
6
m
+
5
square feet.
Which expression represents the combined square footage of the two flower beds?
In AUVW, the measure of ZW=90°, VU = 65, UW = 33, and
WV = 56. What ratio represents the tangent of ZU?
Answer: 56/33
Step-by-step explanation:
Joe’s Coffee is having a stained glass window installed on their front door. Approximately how much glass will be needed to create the stained glass window?
PLSS USE STEPSSS!!!!
A) 2.4
B) 9.6
C) 11
D) 38.5
[tex]\color{plum}\tt \: D) 38.5 [/tex]
Steps to derive correct answer :Diameter of the stained glass window Joey needs = 3.5
Area of the window = quantity of glass Joey needs
Area of the window :
[tex] = \tt\pi {r}^{2} [/tex]
[tex] = \tt3.14 \times 3.5 \times 3.5[/tex]
[tex] =\tt 3.14 \times 12.25[/tex]
[tex] =\tt 38.46[/tex]
38.46 can be rounded off to 38.5.
Therefore, quantity of glass needed to make the stained glass window = 38.5
Someone help fast! please
Answer:
48cm
Step-by-step explanation:
96/12=8
This means that 8 is the factor by which the diagram and the actual ramp vary
so then you multiply 8 times the height on the diagram to find the true height
8x6=48
jane had a collection of balloons she gave 1/4 of her collection to her sister. how many balloons does jane have now?
Answer:
3/4
Step-by-step explanation:
3x^(2)+5x-2=0
solve step by step using quadratic formula.
Answer:
x=1/3,-2
Step-by-step explanation:
Find the least common denominator of the fractions. 4/7 and 2/3 A. 21 B. 7 C. 3 D. 10
Answer:
4/7 has least common denominator
= 0.5( approx.)
Answer:
21 is the answers for the question
Step-by-step explanation:
please mark me as brainlest
Please help with the question in the picture!!
Answer:
Top: -5
Middle: -40
Bottom: -24
Adriel answered 54 questions correctly on his multiple choice history final and earned a grade of 45%. How many total questions were on the final exam?
Answer:
There were 120 questions on the test.
Step-by-step explanation:
It is given that:
Number of questions answered = 54
Grade percent = 45%
Let,
x be the total number of questions
45% of x = 54
[tex]\frac{45}{100}x=54\\0.45x = 54[/tex]
Dividing both sides by 0.45
[tex]\frac{0.45x}{0.45}=\frac{54}{0.45}\\x=120[/tex]
Therefore,
There were 120 questions on the test.
Use the slope formula to find the slope between the given two points. (2, 1) and (8, 9)
Answer:
if the two points are known. 4/3 or 1.333