Answer:
Step-by-step explanation:
15x+5y=8-3x
18x+5y=8⇒eqn 1
15x+5y=20y
15x-15y=0⇒eqn 2
eqn 1 * 3
54x + 15y=24⇒eqn 3
eqn 3 + eqn 2
69x=24
x=24/69=0.3478
eqn 1⇒
5y=8-18(24/69)
y=1.7391/5
y=0.3478
The solution to the system of equations is (10/3, -2).
What is an equation?Two or more expressions with an equal sign are defined as an equation.
The given equations are 15x + 5y = 20 and y = 8-3x.
15x + 15y = 20
Substitute y = 8-3x into the above equation:
15x + 15(8-3x) = 20
15x + 120 - 45x = 20
45x - 15x = 120 - 20
30x = 100
x = 10/3
Substitute x = 10/3 in y = 8 - 3x:
y = 8 - 3 (10/3)
y = 8 - 10
y = -2
Hence, the solution to the system of equations is (10/3, -2).
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Can someone help me with this question
Answer:
c is the right one
Step-by-step explanation:
Help please ASAP:
Which pair of triangles are congruent using the hypotenuse leg congruence criteria?
Select the two correct answers.
A. triangle ABC: A(−7,4), B(−4,1), C(−2,5)
B. triangle QRS: Q(3,−4), R(3,−1), S(7,−1)
C. triangle DEF: D(−2,6), E(1,3), F(3,7)
D. triangle TUV: T(−6,−5), U(−6,1), V(4,1)
E. triangle WXY: W(−6,4), X(−6,1), Y(−2,1)
Answer:
la C
Step-by-step explanation:
help with the question please
Step-by-step explanation:
since all 4 sides are equal in length, the figure is a square.
let the length of the square be lm.
529 = l x l
l = 23m
perimeter = 23 x 4 = 92m
Topic: mensuration
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Pls can someone help me :4u²-u-3
HELP RIGHT NOW !
ASAP !
Answer:
Its 6
Step-by-step explanation:
50 points decreased by 26%.
Answer:
The answer is 37
Step-by-step explanation:
The answer is 37 because 50 multiplied by 26% is 13 and 50 minus 13 is 37
Answer:
The answer is 37
Step-by-step explanation:
The answer is 37 because 50 multiplied by 26% is 13 and 50 minus 13 is 37
Why is the percent increase from 45 to 75 not equal to the percent decrease from 75 to 45? Select three options. The amount of change is different for the percent increase and the percent decrease. The ratio of the percent increase is not the same as the percent decrease. The ratio for the percent increase has a smaller denominator than the percent decrease. The ratio for the percent increase has a different numerator than the percent decrease. The original amount for the percent increase is different from the original amount for the percent decrease.
Answer:
A, C, D
Step-by-step explanation:
I took the test lol :)
(A) The amount of change is different for the percent increase and the percent decrease.
(C) The ratio for the percent increase has a smaller denominator than the percent decrease.
(D) The ratio for the percent increase has a different numerator than the percent decrease.
Percentage:A value or ratio that may be stated as a fraction of 100 is referred to as a percentage in mathematics. If we need to calculate a percentage of a number, we should divide it by its entirety and then multiply it by 100. The proportion, therefore, refers to a component per hundred. Per 100 is what the word percent means.Example -An increase of $[tex]0.15[/tex] on a $[tex]2.50[/tex] price equals a fractional increase of [tex]\frac{0.15}{2.50} =0.06[/tex]. This represents an increase of % when expressed as a percentage.There is no mathematical restriction, therefore percentages may have various values even though the majority of % numbers fall between [tex]0[/tex] and [tex]100[/tex]. For percent changes and comparisons, it's typical to use terms like [tex]111[/tex] percent or [tex]35[/tex] percent.Therefore, the correct options are as follows -
(A) The amount of change is different for the percent increase and the percent decrease.
(C) The ratio for the percent increase has a smaller denominator than the percent decrease.
(D) The ratio for the percent increase has a different numerator than the percent decrease.
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A painter uses 1.2 liters of the paint to cover 1 meter squared of the wall.
How many square meters he can cover with 12 liters of paint
I need the answer quick
Answer:
10meter square
Step-by-step explanation:
1÷1.2×12
0.8333×12
10meter square
Answer:
10
Step-by-step explanation:
Evaluate the expression when b=9 .
24b+8 =
Answer:
224
Step-by-step explanation:
24b + 8 =
b = 9
24b + 8 = 24(9) + 8 = 216 + 8 = 224
Plz solve this. with expalnations 20 points
Step-by-step explanation:
length of half circumference EFG=15
BC=8
the perimeter=57
the are=35square
Angle A and angle B are supplementary. The measure of angle B is 82.5.
What is the measure of angle A, in degrees?
Answer:
Angle A = 97.5º
Step-by-step explanation:
Supplmentary means 2 angles that equal 180º. So we already have 1 angle, so now all we have to do is subtract 82.5 from 180.
180 - 82.5 = 97.5
Angle A and angle B are supplementary. Then the measure of the angle A will be 97.5°.
What is an angle?The inclination is the separation seen between planes or vectors that meet. Degrees are another way to indicate the slope. For a full rotation, the angle is 360 °.
Supplementary angle - Two angles are said to be supplementary angles if their sum is 180 degrees.
Angle A and angle B are supplementary. The measure of angle B is 82.5°.
Then the equation is given as,
∠A + ∠B = 180°
Simplify the equation, then the measure of the angle A will be calculated as,
∠A + 82.5° = 180°
∠A = 180° - 82.5°
∠A = 97.5°
Angle A and angle B are supplementary. Then the measure of the angle A will be 97.5°.
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The image of the point (9,-2) under a translation is (10,3). Find the coordinates of
the image of the point (-8, 4) under the same translation.
Answer:
(2,7)
Step-by-step explanation:
move 10 places to the right and 3 up
3 (x - 5) = 6
solve for x
Answer:
7
Step-by-step explanation:
First you do the distributive property
3x -15=6
Second add 15 from both sides
3x=21
Divided by 3
×=7
factors of 3993 in prime factorization form
Answer:
Look down!!
Step-by-step explanation:
prime factorization calculator of 3993
Positive Integer factors of 3993 = 3, 11, 33, 363, 3993 divided by 3, 11, 11, 11, gives no remainder. They are integers and prime numbers of 3993, they are also called composite number.
3993
/ \
3 1331
/ \
11 121
/ \
11 11
/ \
11 1
Hope this helps!!
Answer? Jsjsj- i need it fast-
Answer:
wth is this witchery???
Step-by-step explanation:
Answer: 4 rods and 5 blocks
Step-by-step explanation:
please help its due soon its geometry
Answer:
7, 7, 60, 60, 60
Step-by-step explanation:
When you draw the circles thhey all hhave radius AB so AB=AC=BC =7
and since all sides are congruent you have a equilateral treangle so all angles are equal to 180/3=60
what is
1. 85 km to m
2. 71 dm to m
3. 63.4 cm to m
Find the slope of the line. Use the "/" to make a fraction if needed.
(not apart of the question)
Im adding more because I known none of these questions
Answer:
The answer is 0 or No Slope
Step-by-step explanation:
This type of line in the graph is called no slope its means it doesn't rise over time
Pls mark me as brainliest
What is the slope of the line that passes through the points (5,11) and (14,-10)
Answer:
the picture has the answer on it
Step-by-step explanation:
The slope of the straight line that passes through the points (5,11) and (14,-10) is [tex]\frac{-7}{3}[/tex].
What is a straight line?''A straight line is an endless one-dimensional figure that has no width. A straight line is a combination of endless points joined on both sides of a point.''
Given, two points are (5, 11) and (14, -10).
Let, the line that passes through both these points has a slope = m.
Where, m = [tex]\frac{y_2 - y_{1} }{x_2- x_{1} }[/tex].
Here, (y₂ - y₁) = Change in the value of y.
(x2 - x₁) = Change in the value of y.
Therefore, [tex]\frac{y_2 - y_{1} }{x_2- x_{1} }[/tex] = [tex]\frac{-10 - 11}{14 - 5}[/tex] = [tex]\frac{-21}{9}[/tex] = [tex]\frac{-7}{3}[/tex]
Hence, slope of the straight line is [tex]\frac{-7}{3}[/tex].
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Write the equation of the line fully simplified slope-intercept form.
Answer:
y= -6x+3
Step-by-step explanation:
0- -1 = 1
3 - 9 = -6
distance = 6.08
Which set of values is a function ? PLEASE HELP
Answer: C
Step-by-step explanation:
A function has to have a pattern, and should be able to be written as a function. C is the only one with a pattern that doesn't suddenly change in between.
use
algebra tiles to represent polynomial.
If one pie needs 1 3/4 cup(s) of flour, how much flour will 5 pies need?
Answer:
8 3/4 cups of flour
Step-by-step explanation:
So, we know that you need 5 pies and that each pie takes 1 3/4 cup. So basically all you have to do is come up with an equation, mine looks like
5 x 1 3/4 or 5 x 1.75 if you don't like fractions.
5 x 1 3/4 = 8 3/4
5 x 1.75 = 8.75
PLEASE HELP ASAP!!!
Answer:
slope is equal to rise (going up or down on graph) over run (going left or right)
Step-by-step explanation:
1 = - [tex]\frac{5}{4}[/tex]
2= [tex]\frac{4}{2}[/tex] = 2
3. [tex]\frac{7}{3}[/tex]
4. -[tex]\frac{4}{7}[/tex]
5. [tex]\frac{3}{6}[/tex] = [tex]\frac{1}{2}[/tex]
6. -[tex]\frac{2}{8}[/tex] = - [tex]\frac{1}{4}[/tex]
Which of the following points lie on this same line?
(–2, 0)
(–1.5, 0)
(–6, 9)
(2, –3)
(3, –9)
(–4, 4)
Answer:
BCE on edunuity
Step-by-step explanation:
In order for two figures to be considered similar, which of the following MUST be true? (Check all that apply) There is more than one answer.
Corresponding sides are proportional
Corresponding sides are congruent
The shapes are exactly the same in side length and angle measure
Corresponding angles are congruent
Answer:
According to me all the options are correct
Which relation is a function
Answer:
Step-by-step explanation:
take your pencil, place it vertical and move it from one side to the other of the graph if it touches the graph in more then 1 point is NOT a function.
only the last one in the right bottom it IS a function
Answer:
number 4
The only one that could be a function is the one on the right that is the lowest.
Please help, with math homework
Answer:
5
Step-by-step explanation:
interior angles of a triangle add up to 180 ⁰ and since it is an isosceles triangle
X=5
The following is a rectangle, find m < ADE
Answer:
(13x + 7)
Step-by-step explanation:
here we would remember that opposite angles in intersecting lines are the same so ADE = EBC just like how EDC = ABE.
i hope this helps :))
Answer: (13x + 7)
Step-by-step explanation:
the value of a boat varies inversely with age. If a boat is worth $7000 when it is 3 years old, how much will it be worth when it is 7 years old
Step-by-step explanation:
let worth be y and age be x
y = k/x, where k is a constant, k ≠ 0
7000 = k/3
21000 = k
y = 21000/7
y = 3000
$3000
Topic: Direct and inverse proportions
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