Answer:
x=3 and x=-1.25
Step-by-step explanation:
4x^2-7x=15
subtract 15 from each side:
4x^2-7x-15=0
factor (trying different numbers that the sum is 7 and the quotient is 15)
(2x-6 )(2x+2.5 )=0
2x-6=0 add 6 to each side
2x=6
x=3
2x+2.5=0 subtract 2.5 from each side
2x=-2.5
x=-1.25
Bobby is 5 less than Kylie's age. Their combined
age is 43. How old is Kylie?
Answer:
Kylie is 24 years old
Step-by-step explanation:
kylie = x
Bobby=x-5
x+x-5=43
2x-5=43
2x=43+5
2x=48
X=24 years old
19
If you subtract 5 off of 43 and divide it by two you find Kylie's age. The reason you divide by two is because there are two people and it is a combined age, meaning you would divide by two.
-Ɽ3₮Ɽ0 Ⱬ3Ɽ0
In a bag of marbles, image are red, image are blue, image are green, and image are yellow. You pick a marble without looking. What color marble are you MOST likely to choose?
A.
blue
B.
red
C.
yellow
D.
green
EASY 7TH GRADE MATH 6 out of 8 dentists recommend crest. In a group of 156 dentists, how many of them recommend crest?
Answer:
117
Step-by-step explanation:
6/8 x/156 so 156/8=19.5*6=117
Please help due today
Answer:
The event is unlikely.
Step-by-step explanation:
Probabilities under 50% (0.50) are considered unlikely.
Diego want to paint his room purple. He bought one gallon of purple paint that is 30% red paints and 70% blue paints. Diego wants to add more blue to mix that the paint mixture is 20% red, 80% blue.
How much blue paint should Diego add? Test the following possibilities: 0.2 gallons, 0.3 gallons
Answer:
10 gallons
Step-by-step explanation:
Which of these represents the expression "7 less than twice x"? O 7-2x O 2X-7 O 7 < 7 < 2x O 2x
Answer:
the answer for this question is 7-2x
2. f(x) = (x -2)^2 +4
Is this a real question because i dont think this exist unless u are some type of genius
im begging yall please help me!please?
Question-Susan works for the school newspaper and wants to conduct a survey to ask students whom they will vote for in the upcoming School actions which example should she choose to best represent the entire population ?
Which numbers are less than –83? Select all that apply.
Step-by-step explanation:
there aren't any answer choices but on the number line it is anything to the left of -83
Answer:
You didn't provide the answers, but I can still help you :)
Step-by-step explanation:
____________________________________________________________
anything back here will be correct :) -83
1. If you wish to calculate the interest on an investment with an interest rate
of 2.85%, what number will you plug into your equation?"
0.00285
2.85
0.285
ОО
0.0285
=========================================
Explanation:
You move the decimal point two spots to the left to go from 2.85% to 0.0285
Or you can think of it like this:
2.85% = (2.85)/100 = 0.0285
since "percent" means "per 100"
Need help! Please solve my age problem!
Answer:
he's 12 years old
Step-by-step explanation:
12x2=24 <-- mothers age
12+12=24 <-- 12 year later child age
so the child is 24 and the mother is 36
Please rate this question :) thanks
teri ran 4 kilometers . one mile is approximately equal to 1.6 kilometers. how many miles did teri run
Answer:
2.5 Miles
Step-by-step explanation:
4 k = ? Mile
1.6 k = 1 mi
4/1.6 is 2.5
1x2.5 equals 2.5
so 4 km should be 2.5 mi
4 k = 2.5 Mile
(x2.5)1.6 k = (x2.5)1 mi
Which equation has the slope of 3? A. y=3 B.y=x+3 C. y=3-x D. y=3x-1
What is the value of p?
the answer is p=6
hope that helped loll
Answer: 6
Step-by-step explanation:
In a triangle, all three angles always add to 180°.
Thus, simply do 180 - 96 - 54 to get the angle, 30. Then, because the angle is 5p, divide 30/5 = 6.
Hope it helps <3 :D
henry subracts 16 from it and gets an answer of 13.9 what was the orginal number
Answer:
29.9 is the answer for that question
Answer:
the original number would have been 29.9
Step-by-step explanation:
13.9+16=29.9
14y-14->14 what is the solution to the inequality
Answer:
if you see this say hi pls
Step-by-step explanation:
Answer:
y > 2
Step-by-step explanation:
Given
14y - 14 > 14 ( add 14 to both sides )
14y > 28 ( divide both sides by 14 )
y > 2
Someone help please and make sure it’s right please :)
I will mark you brainiest if you can answer this
Answer:
x = -6
Step-by-step explanation:
4x - 2 + 3x - 7 = -51
Simplify
7x - 9 = -51
Move Terms
7x = -42
Divide.
x = -6
good luck, i hope this helps :)
Answer:
-6
Step-by-step explanation:
4x-2+3x-7=-51
we take minus two to the other side and it becomes plus two and -51+2 is -49
4x+3x-7=-49
and we take minus seven to the other side it becomes plus seven and -49+7 iis -42
4x+3x=-42
4x+3X = 7x
7x = -42
and to remove the x we divide both sides by 7
x = -42/7
-42/7 = -6
x=-6
John leaves his home. He travels 5 blocks south and three blocks west. As the crow flies, how far is John from his home?
Answer:
5.83 blocks away from his home
Step-by-step explanation:
If he travels 5 blocks south and 3 blocks west, the distance from his house considered along with the distances travelled gives a right angled triangle whose opposite side and adjacent sides are the distances travelled north and west.
The distance from his house after moving 3 blocks west is the hypotenuse side. As such, the distance may be computed using Pythagoras' theorem. Let the distance from his house be G
G^2 = 5^2 + 3^2
G^2 = 25 + 9
= 34
G = √34
=5.83
John is 5.83 blocks away from his home
Please help due today
PLEASE HELP GIVING BRAINLIEST TO CORRECT ANSWER! 10 POINTS
Janile got 4 kilograms of candy when she went trick-or-treating at Halloween. Since she didn’t want to eat it all, she decided to share it with her 4 friends. If the 5 of them share the 4 kilograms, how much will each of them have?
Answers: (Show explanation)
15,000 tons
150 tons
18,750 tons
600,000,000 tons
Answer:
it 15,000
Step-by-step explanation:
I hope it work
Can somebody help me please !?
Answer:
option 4) x = 14 y = 7
Step-by-step explanation:
We are given a side angle and a side length so we can use trigonometry to find the solution
To find x we can use sine because the given side length is opposite to the angle so,
sin(60) = [tex]\frac{7\sqrt{3} }{x}[/tex]
solve for x and you get 14 (make sure you check that your calculator is in degrees)
for either use Pythagorean theorem or remove sine by tangent.
3. The width of a rectangle is 3x – 7. The length of the rectangle is 4x +5.
Find the perimeter of the rectangle.
A. 4x - 14
B. 6x - 14
C. 8x + 10
D. 14x - 4
PLEASSSSEEE
Answer:
D. 14x - 4
Step-by-step explanation:
P = 2(L + W)
P = 2(4x + 5 + 3x - 7)
P = 2(7x - 2)
P = 14x - 4
HELP!!!
Round your answer to the nearest hundredth.
А
?
6
С
B
4
Answer:
41.81
Step-by-step explanation:
sinus-1 formula
opp/hyp
4/6
What would you multiply by to find 120% of a number?
Whats 7 rounded to one decimal place?
6^8 x 6^3 = 6^5 x 6^x
Find the value of x..... Can you help me
Answer:
x=6
Step-by-step explanation:
Using the given diagram, solve for x.
Answer:
x is the hypotenuse so you will take awhat is the step by step equation for −4+12=−4?
thanks!
Answer:
the actually answer is -8
Step-by-step explanation:
Mario is 4 feet 9 inches tall. What is his approximate height in centimeters? (1 in. ≈ 2.54 cm)
Answer:
144.78cm
Step-by-step explanation:
4ft 9in is 57 inches
so 57x2.54 is 144.78
Answer:
Mario is 12.446 cm
Step-by-step explanation: