Answer:
50.24
Step-by-step explanation:
To get the area you do A = π r² so, A = 3.14(4²). Then if you solve it you get A = 50.24.
Multiply (3x-5)(x+4)
Answer:
3x^2+7x-20
Step-by-step explanation:
Answer:
expand the brackets
3x^2 + 7x -20
Step-by-step explanation:
(3x-5)(x+4)
= 3x^2 + 12x - 5x + 20
= 3x^2 + 7x + 20
The average test score for 8 students is 5 the scores for 7 of the 8 students are shown what is the score of the 8th student
Answer:
70
Step-by-step explanation
Find the diagram attached
Average = Sum of scores/sample size
Given the 7 numbers
20, 20, 20, 30, 80, 80, 80
Average = 50
5 = 20+20+20+30+80+80+80+x/8
x is the score of the 8th student
50 = 330+x/8
400 = 330+x
x = 400-330
x = 70
Hence the score of the 8th student is 70
A man's income is increased in the ratio 47:40.find the increase percentage
Answer:
14.8%
Step-by-step explanation:
Given data
Initial income=47
Final income=40
The change= 47-40
=7
Hence the percent increase is
% increase= Change/ initial*100
% increase= 7/47*100
% increase=0.148*100
% increase=14.8%
which equation is written in standard form ?
a. y-3 = -5(x+2)
b. y= 1/2x + 2
c. 3x + 2 = y
d. -7x + 2y = 9
B is standard form. y=1/2x + 2
Answer:
d.-7x+2y=9 that is the answer
I’ll give points but please help me on this and if you don’t know the answer please don’t answer the question thank you
Help Me Mr Thompson! HW For Math
Answers:
6) b. Apply square root to both sides7) d. 8 by 10. 8) a. Thickness of edge that leads to total area of 100 square inches9) a. x = -5 and x = 3/210) d. zero product property======================================================
Explanations:
6) We apply the square root to both sides to undo the squaring operation.7) The photo without the frame is 8 by 10 since we add on two copies of x to jump from 8 to 8+2x. Similarly, we go from 10 to 10+2x.8) The x represents the thickness of the frame. The 100 is the total area (picture + frame). The expression on the right hand side is also the total area.9) Apply the zero product property to set each factor equal to zero. You'll find that x+5 = 0 leads to x = -5. Also, 2x-3 = 0 becomes 2x = 3 and solves ultimately to x = 3/210) Refer to problem 9If a square has sides of 10 meters each, what is the area?
Answer:
Step-by-step explanation:
A=a2=102=100m²
Is this correct ? What’s the answer??
Answer:
Im not sure Im sorry Im just trying to get points but I will send to a friend to help
Step-by-step explanation:
Can someone help me with this problem with steps?
Answer:
x = -11
m<R: 22
m<Q: 94
Step-by-step explanation:
54 - 9x - 5 + 10 - 2x = 180
-11x + 59 = 180
-11x = 180 - 59
-11x = 121
x = -11
m<R:
10 - 2x
10 - 2(-11)
10 + 22
22
m<Q:
-9x - 5
-9(-11) - 5
99-5
94
Please help with these (algebra)
Find x. Round to the nearest tenth if necessary.
Answer:
9
Step-by-step explanation:
A carpenter bought 5 identical boxes of nails. She used 25 nails fir a project and now has 435 nails left. Which equation can be solved to find the number of nails in each box.
Answer:
The equation that can be solved to find the number of nails in each box =
5x = 460
The number of nails in each box = 92 nails
Step-by-step explanation:
A carpenter bought 5 identical boxes of nails. She used 25 nails for a project and now has 435 nails left. Which equation can be solved to find the number of nails in each box.
Let the number of nails in each box be represented by x
Therefore our Equation =
5x = 25 + 435
5x = 460
Solving for x
5x/5 = 460/5
x = 92 nails
Therefore, the number of nails in each box = 92 nails
Translate this sentence into a inequality six subtract from y is greater then or equal to -22
Answer:
Step-by-step explanation:
y - 6 ≥ -22
OR
y ≥ 16
Hope that helps!
The Great Pyramid of Cheops is a square-based pyramid. The base has sides of 230m, and a height of 147m.
Using the same material, what would the height be if you gave the base sides of 250m?
height = ___m
Amy is cutting out a cardboard triangle for a school project please help have to turn in grades Monday morning ☹️
Answer:
82.5 sq in
Step-by-step explanation:
15 × 11 = 165
165/2 = 82.5
82.5 sq in
**GIVING BRAINLIEST**
out in the open ocean, a tsunami can travel 800 kilometers per hour but as it reaches the coast it has to compress and slow down. suddenly it is now traveling only 160 kilometers in 2 hours. what is the rate of speed?
Find the area of the figure.
Answer:
249.86 ft^2
Step-by-step explanation:
12.4 ft × 9.3 ft ÷ 2 = 57.66 sq ft(for triangle)
57.66+(12.4 ft×15.5 ft) = 249.86 sq ft
brainliest plz
on Tuesday afternoon at Camp Bruce Did archery and sailling before dinner he spent 55 minutes at archery and 1 hour and 35 minutes sailing,sailing ended at 2:35 p.m. when it was time for dinner.What time did archery Start
Answer:
12:30
Step-by-step explanation:
Find the angle between the given vectors to the nearest tenth of a degree.
u = <-5, 8>, v = <-4, 8>
2.7°
-7.3°
5.4°
15.4°
9514 1404 393
Answer:
(c) 5.4°
Step-by-step explanation:
We can simply determine the difference between the angles of the vectors:
arctan(8/-5) -arctan(8/-4) = 122.005° -116.565° = 5.440°
The angle between the vectors is about 5.4°.
__
Alternate solutions
1) We could also determine the angle of their ratio.
u/v = (-5 +8i)/(-4 +8i) = (-5 +8i)(-4 -8i)/(4² +8²) = (84 +8i)/80 = 1.05 +0.1i
angle = arctan(0.1/1.05) = 5.440°
__
2) Tan(a-b) = (tan(a)+tan(b))/(1 -tan(a)(tan(b))
tan(∠u -∠v) = ((tan(∠u) -tan(∠v))/(1 +tan(∠u)tan(∠v))
= (-1.6 -(-2))/(1 +(-1.6)(-2)) = 0.4/4.2
∠u -∠v = arctan(2/21) = 5.440°
6 6/13 - 4 3/13
I NEED HELP WITH THIS ASAP THE ASSIGNMENT IS DUE IN 10 MINUTES!!!!!
( its a fraction btw)
A story owner wants to prepare 100 lb of a candy mix that she will she for $1.36 per lb. She mixes 20 lb of jelly beans that cost 20 cents per lb with sugar candies. How much does 1 lb of sugar candies cost?
Answer:
1.65
Step-by-step explanation:
100 pounds of the mixture = 1.36 * 100 = 136 dollars.
She uses 20 pounds of jelly beans that cost
20 * .20 = 4.00
136 - 4 = 132 dollars left for 80 pounds of sugar candies.
80 pounds = 132 pounds of sugar candies.
1 pound = x
80/1 = 132 / x Cross multiply
80x = 132
x = 132 / 80
x = 1.65 / per pound
Solve the quadratic equation 3x² + 2x - = 0
Answer:
first try taking the common
Step-by-step explanation:
x(3x+2)=0
3x=-2
x=-2/3
Answer:
x = - [tex]\frac{2}{3}[/tex] , x = 0
Step-by-step explanation:
Given
3x² + 2x = 0 ← factor out x from each term
x(3x + 2) = 0
Equate each factor to zero and solve for x
x = 0
3x + 2 = 0 ⇒ 3x = - 2 ⇒ x = - [tex]\frac{2}{3}[/tex]
SOMEONE PLEASE HELP ME WITH THIS ILL GIVE YOU BRAINLY IF YOU GET IT RIGHT ALSO PLEASE EXPLAIN HOW YOU GOT THE ANSWER!!!
Find the area use 3.14 for the value of pi
Answer:
78.5 inches
Step-by-step explanation:
A=(pi)r^2
divide diameter by 2 to get radius
radius = 5
3.14(5)^2 = 78.5
Apples are on sale for $0.75 per apple. using the numbers on the tiles provided, fill in each space in the table to model the relationship between cost and number of apples purchased.
Answer:
1.50
Step-by-step explanation:
Find the perimeter and the area of the figure.
6 cm
7 cm
9.5 cm
6.5 cm
Answer:
259 cm will be the answer, if i am wrong im very sorry about getting it wrong
Step-by-step explanation:
i tried my best.
A circle has a circumference of 3.14 units.
What is the diameter of the circle?
inits
Answer:
D = 1
Step-by-step explanation:
0.99949
round the answer so its 1
diameter = 1
−|−37| = 37 true or false
Answer:
false
Step-by-step explanation:
The value of |−37| is 37
however, since the negative sign is in front of the absolute value,
−|−37| = -37
Therefore,
−|−37| does not equal 37
The given statement −|−37| = 37 is false.
Given that, −|−37| = 37.
We need to whether the given statement is true or false.
What is an absolute value?The absolute value of a variable x is represented by |x| which is pronounced as 'Mod x' or 'Modulus of x'. 'Modulus' is a Latin word, which means 'measure'. Absolute value is commonly referred to as numeric value or magnitude. The absolute value represents only the numeric value and does not include the sign of the numeric value. The modulus of any vector quantity is always taken as positive and is its absolute value.
Now, |−37|=37
So, -|−37|=-37
Therefore, the given statement is false.
To learn more about an absolute value visit:
https://brainly.com/question/1301718.
#SPJ2
Two students created a tape diagram to represent the following problem: The distance between Rosa's house and her school is 3/4 miles. She ran 1/3 of the way to school.
How many miles did she run Which tape diagram best represents the problem?
1. Tape Diagram A
2. Tape Diagram B
Answer:
Tape diagram b
Step-by-step explanation:
It shows 1/3 out of 3/3 instead of 1/3 of 1/3
Maggie tosses a coin off of a bridge into a stream below. The distance the coin is above the water is modeled by the equation below, where x represents time in seconds. What is a reasonable range for the function?
y= -16x^2+96x+112
Answer:
do 112 - 16x
Step-by-step explanation: