Answer:
22
Step-by-step explanation:2
2
A system of linear equations is shown below. 3x+5y=9 2x+3y=5 which ordered pair shows the solution to the system
Answer:
(-2,3)
Step-by-step explanation:
Given data
the system of linear equation is presented as
3x+5y=9-----1
2x+3y=5-----2
solve simultaneously
3x+5y=9-----1 X 2
2x+3y=5-----2 X3
subtracting 2 from 1
6x+10y=18
-6x+9y=15
0x+y=3
y= 3
put y= 3 in 1
3x+5(3)=9-----1
3x+15=9
3x= 9-15
3x= -6
x= -6/3
x= -2
Hence the ordered pair is (-2,3)
For a=40, simplify 2a divide by 5 is
Answer: 16
Step-by-step explanation:
Rephrase the expression
2a divide by 5
2a/5
Given value
a=40
Substitute the value into the expression
2a/5
=2(40)/5
=80/5
=16
Hope this helps!! :)
Please let me know if you have any questions
0.15 irrational or rational
Answer:
rational...bcz it can be written in the form of p/q
that's 15/100
it is rational number
Step-by-step explanation:
plz make me brainliest
The price of all rail tickets increased by 5 %.
The price of a rail ticket from London to Ipswich increased by £2.30
Work out the price of the ticket before the increase.
Answer:
Step-by-step explanation:
New price = (1 + 5%) x old price
New price = 1.05 x old price
old price = 2.3 / 1.05
Old price = £2.19
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Answer:
£46
Step-by-step explanation:
The increase is ...
0.05 · price = £2.30
Multiplying by 20 gives ...
price = 20(£2.30) = £46.00
The price of the ticket before the increase was £46.00.
The length of the subway is 900 miles.If 1 inch represents 45 miles ,what is the length of the subway on the map
Answer:
Step-by-step explanation:
The length of the subway is 900 miles.
So if 1 inch is 45....we want to find it for 900 miles
900/45 = 20
So it will be 20 inches for 900 miles
Check by using ratio
1 : 45
2 : 90
3 : 135
4 : 180
5 : 225
6 : 270
7 : 315
8 : 360
9 : 405
10 : 450
11 : 495
12 : 540
13 : 585
14 : 630
15 : 675
16 : 720
17 : 765
18 : 810
19 : 855
20 : 900
1 - 20 = inches
45 - 900 = miles
So for 900 miles, it will be 20 inches long
Hope this helped!
Have a supercalifragilisticexpialidocious day!
What is the volume, in cubic inches, of one cube with an edge length of inch?
Answer:
We know that each cube with a -inch edge length has a volume of cubic inch, because . Since the prism is built using 24 of these cubes, its volume, in cubic inches, would then be , or 3 cubic inches.
Step-by-step explanation:
1.Give one real world example in which we use volume of rectangular prisms.
2.Give one real world example in which we use surface area of rectangular prisms.
Answer:
construction workers uses those measurements for buildings and architects
solve: (3-x)(4x+3)<(2x-1)(3-x)
Please refer to the above attachment
what is the value of x?
Step-by-step explanation:
A = midpoint so the left line = right line
3x = 5x - 6
5x - 6 = 3x
5x - 3x = 6
2x = 6
x = 3
The middle one. Pls answer I need it for homework
The diagram shows a right angled triangle.
Find the size of angle x.
give your answer correct to 1 decimal place.
Answer:
34.8°
Step-by-step explanation:
sin x = 8/14 = 4/7
x = arcsin (4/7) = 34.8°
8x+6 factorise fully
Answer:
2(4x+3)
Step-by-step explanation:
We need to find what is the most common between 8x and 6. The only number here is 2 that is common between them.
That will be on the outside of the bracket.
So if we divide 2 from both terms.
8x ÷ 2 = 4x
6 ÷ 2 = 3
Let's put it all together.
2 first.
Our x term and 3 in brackets.
2 (4x+3)
There we go!
A mermaid has a terrarium that measures 42 inches × 10 inches × 9 inches. She also has a box that measures 3 inches × 3 inches × 3 inches. Every minute, the mermaid fills the box with sand from her backyard and then pours the sand into the terrarium. How many minutes does it take the mermaid to fill three-quarters of the terrarium with sand?
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Answer:
105 minutes
Step-by-step explanation:
The volume of the terrarium is ...
V = LWH
V = (42 in)(10 in)(9 in) = 3780 in³
The volume of a box is ...
V = (3 in)(3 in)(3 in) = 27 in³
Then the number of boxes it takes to fill the terrarium is ...
(3780 in³)/(27 in³/box) = 140 boxes
The mermaid wants to fill it 3/4 full, so only needs 3/4 this number of boxes. That is 105 boxes. At the rate of 1 per minute, ...
it will take 105 minutes to fill 3/4 of the terrarium
Please help me with this
Answer:
True
Step-by-step explanation:
Cuz if u substitute (3,-3/2) it would work
Y = 1/2x - 3
-3/2 = 1/2(3)-3
-3/2 = 1.5 - 3
-3/2 = -1.5
& -3/2 is -1.5 as a decimal lol
Someone help please!!
Answer:
y = 6 - 2x
6 - 2 X 0 = 6
6 - 2 X 1 = 4
6 - 2 X 2 = 2
6 - 2 X 3 = 0
6 - 2 X 4 = -2
6 - 2 X 5 = -4
Write and evaluate the expression. Then, complete the statements. Ten less than the quotient of thirty and a number Evaluate when t=2
Answer:
expression: (30/t) - 10
evaluation: 30/2 - 10 = 5
Step-by-step explanation:
What is the probability that the number among the 25 who received a special accommodation is within 2 standard deviations of the number you would expect to be accommodated?
Answer:
Step-by-step explanation:
iF we have a normal distribution then the probability is 95.45%.
x=10 and y=10 is it intercepting parallel or same line?
Answer:
Parallel lines have the same slope. Because the functions \displaystyle f\left(x\right)=2x+3f(x)=2x+3 and \displaystyle j\left(x\right)=2x - 6j(x)=2x−6 each have a slope of 2, they represent parallel lines. Perpendicular lines have negative reciprocal slopes. Because −2 and \displaystyle \frac{1}{2}
2
1
are negative reciprocals, the equations, \displaystyle g\left(x\right)=\frac{1}{2}x - 4g(x)=
2
1
x−4 and \displaystyle h\left(x\right)=-2x+2h(x)=−2x+2 represent perpendicular lines.
Answer:
Intercepting.
Step-by-step explanation:
The line x=10 is a straight vertical line going through all the points where x=10, as the equation suggests.
The line y=10 is a horizontal line going through all the points where y=10.
When you graph them, they intersect in a perfect cross.
Please help ASAP I’m having trouble with these problems there’s only 3 :(
Answer:
sorry i cant read it
Step-by-step explanation:
Akira and Hideo are twins with different jobs. Akira earns five-eighths of what Hideo earns, but Akira’s expenses are half of Hideo’s. Akira ends up saving 40% of his income. What percentage of his income does Hideo save?
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Answer:
25%
Step-by-step explanation:
Apparently, we're to assume that anything not spent is saved.
Let Hideo's income be 1. Then Akira's income is 5/8. Akira's expenses are 60% = 3/5 of that value, so ...
Akira's expenses = (3/5)(5/8) = 3/8 . . . . . of Hideo's income
Hideo's expenses are twice this amount, so ...
Hideo's expenses = (2)(3/8) = 3/4 . . . . . of Hideo's income
That means Hideo saves 1 -3/4 = 1/4 = 25/100 = 25% of his income.
Hideo saves 25% of his income.
Can someone please help with this question? I’ll give brainliest
Answer:
1,and 4
Step-by-step explanation:
Answer:
the first one
Step-by-step explanation:
Because an expression to be equivalent they should both have same sign and Variables
3x - 4y =7
3x - 4y =9
Answer:
No solution
Step-by-step explanation:
25+2-15÷3=?
Pls Help me
Answer:
22
Step-by-step explanation:
15/3= 5
25+2=27
27-5= 22
Hope this helps
PLEASE HELP ME ASAP!!!!!!!!!!!!!!!!!
Question is attached
WINNER GETS BRAINLIEST!!!!!!! Good Luck
Answer:
a- 320 and b- 20
I feel like the answer is either b or d
Answer:
I believe it is the last one
Step-by-step explanation:
Which of the following ordered pairs, when graphed on a standard
coordinate plane, is located in quadrant I?
______________________________
1.) First you need to graph all the ordered pairs:(I have included the graph below)
2.) Then you determine which pairs are in the top left quadrant:[tex]=(-2\frac{1}{3},\frac{1}{3})[/tex]So your answer is only [tex]\bold{(-2\frac{1}{3},\frac{1}{3})}[/tex].
______________________________
find the volume of the earth if the diameter is 7917.5
Answer:
Step-by-step explanation:
diameter=7917.5
r=3958.75
the earth is sphere
V=4/3x3.14xr^3
V=2.6*10^11
Jamal drives 3 times the hours that Danielle does. Jamal and Danielle drive for a total of 8 hours. How long did each person drive?
Answer: Danielle drive for 2 hours
Jamal drives for 2 × 3 = 6 hours
Step-by-step explanation:
Let the number of hours that Danielle used in driving to be represented by x.
Since Jamal drives 3 times the hours that Danielle does. This will be:
= 3 × x = 3x
Since Jamal and Danielle drive for a total of 8 hours. This can be formed into a equation as:
x + 3x = 8
4x = 8
x = 8/4
x = 2
Danielle drive for 2 hours
Jamal drives for 2 × 3 = 6 hours
Explain the prices of dividing two fractions
Answer:
When dividing two fractions, the process is very easy. You simply multiply the numerator fraction by the reciprocal of the denominator fraction. In other words:
[tex]\frac{a}{b} \div \frac{c}{d} \\= \frac{a}{b} \times \frac{d}{c} \\= \frac{a \times d}{b \times c}[/tex]
Immediate help ASAP whats the value of f(8)
Answer:
[tex] \large \boxed{f(8) = 27}[/tex]
Step-by-step explanation:
Goal
Find f(8)Given
Equation[tex]f(x) = \frac{1}{2} {x}^{2} - ( \frac{1}{4} x + 3)[/tex]
Step 1
Substitute x = 8 in the equation and replace f(x) with f(8).[tex]f(8) = \frac{1}{2} {(8)}^{2} - ( \frac{1}{4} (8) + 3)[/tex]
Step 2
Evaluate the value of f(8).[tex]f(8) = \frac{1}{2} (64) - ( \frac{8}{4} + 3) \\ f(8) = 32 - ( \frac{2}{1} + 3) \\ f(8) = 32 - (2 + 3) \\ f(8) = 32 - (5) \longrightarrow 32 - 5 \\ f(8) = 27[/tex]
Hence, the value of f(8) is 27.