please help me with question b) and please explain!!
look at the attached image
Answers
Answer:
17
Step-by-step explanation:
let x be the number of boxes to be shaded to make it 80%
x = 80% of total number
= 80/100 of 25
= 80/4
= 20
So 20 need to be shaded to fill 80%
Now, 13 of the grids are already shared so the amount of more squares that need to be shaded = 20-13
= 17 squares
So that means 2 more squares have to be shaded to fill 8% of the grid
So 13+2=15
Related Questions
Si en 1950 el 30% de la población global, alrededor de 700 millones de personas habitaban
en zonas urbanas. Calcule mediante procedimiento matemático la población total y la
población rural para la misma época.
Answers
Answer:
zonas urbanas => 30 % de la poblacion => 700 millones
poblacion total => 100 % de la poblacion => x => 2333.3 millones
poblacion rural => 70% de la poblacion => x - 700 => 1633.33 millones
[tex]x = \frac{700 \times100}{30} =2333.3[/tex]
[tex]x-700=2333.3-700=1633.33\\[/tex]
What is the image of the point (-5, 2) under the translation T3,-4?
Answers
Answer: (5,7)
Step-by-step explanation:
We want to find the image of a point after a given translation.
The image of the point (-5, 2) under the translation T(3, -4) is the point (-2, -2)
First, we can define how a general translation T(a, b) affects a general point (x, y).
It will add a units to the x-value and b units to the y-value, then we have:
T(a,b)[(x, y)] = (x + a, y + b).
Now we just need to apply the translation:
T(3, -4) to the point (-5, 2)
It gives:
T(3, -4)[(-5, 2)] = (-5 + 3, 2 + (-4)) = (-2, -2)
So the image of the point (-5, 2) under the translation T(3, -4) is the point (-2, -2)
If you want to learn more, you can read:
https://brainly.com/question/16874971
The population of a country has been increasing for several decades. In 1990, the population was about 233 million people. In 2014, the population was about 291 million people. Determine the percent increase in the country's population during this time period.
Answers
Answer:
the answer for this question is increase 24.89%
Step-by-step explanation:
100%= 233 million
? = 291 million
100%/(233×10^6) : x/(291×10^6)
x=[100%×(291×10^6)]/(233×10^6)
x=124.8927039
x=124.89
124.89%-100%=24.89%
Ryan went to the store to buy some walnuts. The price per pound of the walnuts is $4.50 per pound and he has a coupon for $2.75 off the final amount. With the coupon, how much would Ryan have to pay to buy 5 pounds of walnuts? Also, write an expression for the cost to buy pp pounds of walnuts, assuming at least one pound is purchased.
Answers
Answer:
19.75.
Expression: 4.50pp - 2.75
(pp is the variable, pretend)
How many observations are accounted for in the stem and leaf graph?
A) 5
B) 7
C) 18
D) 19
Answers
Answer:
C) 18
Step-by-step explanation:
numbers are 100,101,90,93,94,94,95,81,86,87,89,70,72,76,69,56,58,49
All of the following are equivalent,except.
(12+3)x
(12+3x)x
15x
12x+3x
Answers
Answer: (12+3x)x
Explanation: When you distribute the x in the first option you'll get 12x+3x, which you can simplify to 15x (combine like-terms). Having this information, you know that the first one is equivalent to the third one and the fourth option. When you distribute the x in the second you you get (3x^2)+12x. This is not equal to any other option.
anybody know this :( please help
Answers
Answer:
the set of all the real values which are strictly greater than zero which is all positive real numbers
Step-by-step explanation:
In interval notation: (0, ∞)
Any exponential function with a positive base and positive multiplier will have a horizontal asymptote at y=0 and will extend to +∞. That's what this one does.
Range of a function--
The range of a function is the set of all the values that are attained by a function.
We are asked to find the range of the function f(x)
the set of all the real values which are strictly greater than zero
x > 0
please mark me brainliest :)
find the value of k for which the quadratic equation 2x^-kx+=0 have equal roots
Answers
Answer:
I'll email it to you
Isosceles and Equilateral triangles question! 60 POINTS!!
How do I figure out what "a" is equal to? Thanks!
Answers
Answer:
a = 43
Step-by-step explanation:
If PQ = PR, then P = R
The sum of the angles of a triangle is 180
P+Q+R = 180
47+2a + 47 = 180
Combine like terms
94 + 2a = 180
Subtract 94 from each side
2a = 180-94
2a = 86
Divide by 2
2a/2 = 86/2
a = 43
Answer:
43
Step-by-step explanation:
PQ = PR, so P = R
P + Q + R = 180
47+2a + 47 = 180
2a = 180 - 47 - 47
2a = 86
= 43
Hope this helps!
Estimate the measure of ∠DBC.
Could someone please help me with this?
Answers
Answer:
Option (4). 135°
Step-by-step explanation:
From the figure attached,
Two pair of vertical angles have been given,
∠ABD and ∠CBE
∠ABE and ∠CBD
One pair of angles ∠ABD and ∠CBE are acute angles which are less than 90°.
Similarly, other pair ∠ABE and ∠DBC are obtuse angles which are more than 90°.
Therefore, out of the given options measure of one pair ∠DBC and ∠ABE should be 135°.
Option (4) will be the answer.
A jar contains 3 black marbles, 4 white marbles and 5 striped marbles. If a marble is picked at random, what is the probability that it is black? Give your answer as a fraction in lowest terms.
Please help!!!
Answers
Answer:
1/4
Step-by-step explanation:
there is 3 black marbles and 3+4+5=12 total marbles. 3/12=1/4
state with triangle congruence postulate explain that the triangles are congruent
Answers
Answer: d) Angle-Angle-Side (AAS)
Step-by-step explanation:
See image --> I labeled the angles to show ΔABC and ΔCDE
Here is the proof that shows ΔABC ≡ ΔDEC
Statement Reason
1. AB ≡ DE 1. Given
2. ∠B ≡ ∠E 2. Given
3. ∠ACB ≡ ∠DCE 3. Vertical Angles
4. ΔABC ≡ ΔDEC 4. AAS Congruency Theorem
We have 2 angles and 1 side so our only options are AAS or ASA.
We can eliminate ASA because the side is NOT between the angles.
If you follow the path of the triangles; first you have Side (AB ≡ DE), then Angle (∠B ≡ ∠E), then Angle (∠ACB ≡ ∠DCE). We don't have SAA as an option so follow it backwards and you get Angle-Angle- Side (AAS).
Who is the dictator of USSR
Answers
Answer:
No. Leaders Date of death
1 Vladimir Lenin January 21, 1924
2 Joseph Stalin March 5, 1953
3 Georgy Malenkov January 14, 1988
4 Nikita Khrushchev September 11, 1971
Step-by-step explanation:
3.268 rounded to the whole number
Answers
Answer:
Brainliest goes to me!
Step-by-step explanation:
3
3.268
lets only look at 3.2 .......
3.2 is rounded down to 3
Answer:
3.268 rounds to 3
Step-by-step explanation:
Numbers less than 5 round downNumbers that are 5 or higher round upRounding to the whole number would be rounding to the One's Place2 is less than 5, so it rounds down to 3Please mark Brainliest
When 10b=5 is solved for c, one equation is c=(2b-2)^2
Answers
Answer:
b= 1/2
c = 1
Step-by-step explanation:
10b = 5
You want to leave the variable b on it's own so you divide both sides by 10
10b/10 = 5/10 --> b = 5/10 or 1/2
Since you have the value of b now, plug it in to solve for the value of c
c = (2 (1/2) - 2)^2
= (1 - 2)^2 Half of 2 is 1, of course
= (-1)^2 (-1 * -1)
c = 1 (a negative times a negative is a positive
So the value of be is 1/2 and c is 1
Hope this helps!
I can’t tell if my answer is correct , please help !!!!!! Will mark brainliest !!!!!!!!!!!!
Answers
Answer:
You should be right
Step-by-step explanation:
Srry if I am wrong though
I really need help with this problem can someone pls help me! I really need help plz help me solved this problem need help ASAP!
Answers
Answer:
64
Step-by-step explanation:
4^2-4*3*-4
=16-(-48)
=64
Which graph represents a function? answerr FASTTTT PLZZZ
Answers
Answer:
graph 1 is the function.
There are 200 carpenters in a crew. On a certain day, 150 were present. What percent showed up for work?
Answers
because when dividing 200 x 4 you will get 50 and 50 would equal to 25% of the total of carpenters and if you multiply 50 by 3 would get 150 and a percentage wise that would be 25% times three which is 75 and that’s how you get the answer
PLEASE HELP IM STRUGGLING here is a rectangle all the measurements are in centimeters
The perimeter of the rectangle is 39cm
Work out the area of the rectangle
Answers
Answer:
Area of the rectangle = 95 cm²
Step-by-step explanation:
Perimeter of the rectangle = Sum of the measures of the sides of the rectangle
From the figure attached,
Perimeter of the rectangle = 2[(3x -1) + (2x + 3)]
39 = 2(5x + 2)
39 = 10x + 4
10x = 39 - 4
10x = 35
x = 3.5
Therefore, measure of the given sides will be,
Length = (3x - 1) cm
3x - 1 = (3×3.5) - 1
= 10.5 - 1
= 9.5 cm
Width = (2x + 3) cm
2x + 3 = (2×3.5) + 3
= 7 + 3
= 10 cm
Area of the rectangle = Length × width
= 9.5 × 10
= 95 cm²
Therefore, area of the rectangle is 95 cm².
5. Jason works at a local fish and chips restaurant.
He earns $7/h during the week, and $9/h on the weekend.
a) Jason works 8 h during the week and 12 h on the weekend.
Write an expression for his earnings.
b) Jason works x hours during the week, and 5 h on the
weekend. Write an algebraic expression for his earnings.
c) Jason needs $115 to buy sports equipment.
He worked 5 h on the weekend.
How many hours does Jason need to work during the week to
have the money he needs?
Answers
Answer:
a) 7(8)+9 (12)
b)7x+45
c )10 hours
Step-by-step explanation:
Hi, to answer this question we have to write an expression
The amount earned by Jason must be equal to the product of the amount he earns per hour during the week (7) and the hours worked during the week (x) ; plus the product of the amount he earns per hour during the weekend ( 9) and the hours worked during the weekend (y):
7x+ 9y
a) substitute x=8 and y=12
7 (8)+ 9 (12)
b) substitute y =5
7 x +9(5) =
7x+ 45 =
c)
Substitute y=5 and the expression must be equal to the amount he needs to buy sports equipment (115):
7x+9 (5)=115
Solving for x:
7x + 45 =115
7x = 115-45
7x = 70
x =70/7
x =10 hours
What’s the logarithmic form equation?
Answers
Answer: i hope this will help you
a^x=y this is a simple equation
where as loga(in the base) y=x this is a logarithmic equation
In a test +3 marks are given for every correct answer and -1 mark for every incorrect answer. Sona attempted all the questions and scored +20 marks through she got 10 correct answers. How many questions were asked?
Answers
Answer: 20
Step-by-step explanation:
(i) Sona got 10 answers correct.
1 correct answer = 3 marks
10 correct answers = 10×3 = 30 marks but she got only 20
1 wrong answer = -1 mark
that means she attempted 10 incorrect answers.
No.of questions in the test= no.of incorrect + no.of correct answers
10+10= 20
How do I solve this problem???
Answers
Answer:
[tex]25.1cm^3[/tex]
Step-by-step explanation:
[tex]V=\pi r^2h=\pi *2^2*2=25.13274\\=25.1cm^3[/tex]
rationalize the denominator of 5√3+3√5 ÷ 5√3+3√5
Answers
Answer:
[tex]1[/tex]
Step-by-step explanation:
[tex]\frac{5\sqrt{3}+3\sqrt{5} }{5\sqrt{3}+3\sqrt{5} }[/tex]
[tex]=1[/tex]
Find the greatest common factor of 30 and 75.
Answers
Answer:
15
Step-by-step explanation:
prime factorization of 30 is 2*3*5
prime factorization of 75 is 3*5*5
3*5 is common
Please help me please
Answers
Answer:
SAS similarity theorem
Step-by-step explanation:
Both the triangles are similar by SAS similarity theorem.
How do you graph Y =4 find the slope of a line that is parallel to it
Answers
Answer:
Answer is below
Step-by-step explanation:
I graphed the equations on the graph below.
The slope of y = 4 and y = 5 is 0 because the lines are flat and constant, instead of increasing or decreasing.
If f(x) = 3x-2 and g(x) = 2x + 1 find (f-g)(x)
Answers
Answer:
x-3
Step-by-step explanation:
f(x) = 3x-2
g(x) = 2x + 1
(f-g)(x) = 3x-2 - (2x+1)
Distribute the minus sign
=3x-2-2x-1
Combine like terms
= 3x-2x-2-1
=x-3
What equation represents three less than 1/5 of a number is 28
Answers
the answer is x÷5-3 = 28
Answer:
(28+3)×5=x
Step-by-step explanation:
28+3= [tex]\frac{1}{5}[/tex] of x
31 is 1/5 of x
x is 155
Checking:
155÷5-3=28
31-3=28
x is 155
Alternate solution:
(28+3)×5=x
