Solve: 40 + -58
Please help!
Answer:
-18
Step-by-step explanation:
because you take 40 + -58 and you can make the positive and negative sign a negative so now it would be 40-58
if you reverse it to make it 58-40 you would get 18 and then reverse it back to negative because you reversed it once so now its -18
2. Draw a right triangle with side lengths of 6 centimeters, 8 centimeters,
and 10 centimeters, using a protractor to ensure that one angle is exactly
90°. Now make and cut out three squares; one with 6-centimeter long
sides, one with 8-centimeter long sides, and one with 10 centimeter long
sides. Place each square next to the corresponding sides of the triangle,
Which side is the hypotenuse in your diagram?
Answer:
the ten-inch side is the hypotenuse.
Step-by-step explanation:
[tex]a^{2}+ b^{2} =c^{2}[/tex]a= 6
b= 8
c= 10
use substitution to replace the variables in the equation, it should look like this:
36+64=100
the equation above is true, so the answer is that the 10-inch side is the hypotenuse.
*** I couldn't make a diagram on here, so I explained the math. hope this helps
Write a quadratic equation given the roots -1/3 and 5, show your work
[tex] \boxed{(x - a)(x - b) = 0}[/tex]
The equation above is the intercept form. Both a-term and b-term are the roots of equation.
[tex]x = - \frac{1}{3} \\ x = 5[/tex]
These are the roots of equation. Therefore we substitute a = - 1/3 and b = 5 in the equation.
[tex](x + \frac{1}{3} )(x - 5) = 0[/tex]
Here we can convert the expression x+1/3 to this.
[tex]x + \frac{1}{3} = 0 \\ 3x + 1 = 0[/tex]
Rewrite the equation.
[tex](3x + 1)(x - 5) = 0[/tex]
Simplify by multiplying both expressions.
[tex]3 {x}^{2} - 15x + x - 5 = 0 \\ 3 {x}^{2} - 14x - 5 = 0[/tex]
Answer Check
Substitute the given roots in the equation.
[tex]3 {(5)}^{2} - 14(5) - 5 = 0 \\ 75 - 70 - 5 = 0 \\ 75 - 75 = 0 \\ 0 = 0[/tex]
[tex]3( - \frac{1}{3} )^{2} - 14( - \frac{1}{3}) - 5 = 0 \\ 3( \frac{1}{9} ) + \frac{14}{3} - 5 = 0 \\ \frac{1}{3} + \frac{14}{3} - \frac{15}{3} = 0 \\ \frac{15}{3} - \frac{15}{3} = 0 \\ 0 = 0[/tex]
The equation is true for both roots.
Answer
[tex] \large \boxed {3 {x}^{2} - 14x - 5 = 0}[/tex]
what type of problem can be modeled and solved with a two-variable linear inequality?
Answer:
A linear equation can be written in many ways, so the way we can use to solve a system of linear equations depends on the form the system is written. There are several methods to do this, the more common are: Method of Equalization, Substitution Method, Elimination Method.
A company makes 140 bags.
21 of the bags have buttons but no zips.
25 of the bags have zips but no buttons.
45 of the bags have neither zips nor buttons.
How many bags have zips on them?
A set is a mathematical model for a collection of items; it comprises elements or members, which may be any mathematical object. The total number of bags that have both zips and buttons is 49.
What is a set?A set is a mathematical model for a collection of items; it comprises elements or members, which may be any mathematical object: numbers, symbols, points in space, lines, other geometrical structures, variables, or even other sets.
Given that A company makes 140 bags. 21 of the bags have buttons but no zips. 25 of the bags have zips but no buttons. 45 of the bags have neither zips nor buttons.
Now, we can write the following things about the given condition,
Total number of bags, s = 140
Bags with Only zips, only Z = 25
Bags with only buttons, only B = 21
Bags with neither or them, Z'∩B' = 45
Now, the total number of bags that have both of them is,
Z∩B = s - only Z - only B - Z'∩B'
= 140 - 25 - 21 - 45
= 49
Hence, the total number of bags that have both zips and buttons is 49.
Learn more about Set:
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#SPJ5
Name the line of reflection.
Answer:
y=0
Step-by-step explanation:
How could a company use a line graph to make it appear as though they had a larger profit?
Answer:
The “classic” types of misleading graphs include cases where: The Vertical scale is too big or too small, or skips numbers, or doesn't start at zero. The graph isn't labeled properly. Data is left out.
A department store sells a pair of shoes with an 56.3% markup. If the store bought the pair of shoes for $43.75, what is the selling price to the nearest cent?
Answer:
The selling price for the shoes will be $68.35
Step-by-step explanation:
the ratio between the number of vowels and consonants letters of word ALERT is
Alonzo will rent a car for the weekend. He can choose one of two planes. The first plan has an initial fee of $38 and cost an additional $.12 per mile driven the second plan has an initial fee of $49 in cost an additional seven cents per mile driven. What amount of drive into the two plans cost the same? What is the cost when the two plans cost the same?
Answer:
in 220 miles both plans will cost the same
Step-by-step explanation:
38 + .12m = 49 + .07m
38 + .05m = 49
.05m = 11
m = 11/.05
) Kadence has $50 in her bank account. Then, she bought a new shirt that cost $33. She then deposited x dollars into her account to bring her balance to $28. What is the value of x?
Answer:
The value of X is $5
Step-by-step explanation:
Step-by-step explanation:
We have $50 - $33 + $x = $28.
=> $17 + $x = $28
=> $x = $11
Therefore Kadence deposited $11 into her account.
The value of x is 11.
Solve the system using elimination:
3x + 2y = 9
x + y = 4
Step-by-step explanation:
a) (1,3)
I think it is correct answer
Which graph has a slope of 4/5?
Answer:
remake question and comment on this answer. don't forget the pictures of the graphs!
What does the diagram at the left tell us about the two
triangles? Your answer should include the name of a
specific type of transformation.
Answer:
Its enlargement
Step-by-step explanation:
Its enlargement!
hope it helps
Classify this triangle by its sides and angles.
-right and scalene-
-right and isosceles-
-acute and isosceles-
-acute and scalene-
I neeeeeeddddd helppppppppppppppp
is this right?
Answer:
no the answer is 7.....
Answer:7
Step-by-step explanation:
27 divided by 3 is 9.
so
21 divided by 3 will give u the answer which is 7.
Evaluate (5 + 2) to the power of 2 - 40 + 3 =
Answer:
12
Step-by-step explanation:
(5+2)^2 - 40 + 3
= 7^2 - 40 + 3
= 49 - 40 + 3
= 49 - 40
= 9+3
= 12
36 flowers in 4 vases = flowers per vase?
Answer:
9 flowers per vase
Step-by-step explanation:
36 divided by 4 is 9
can i get brainliest plz
The minute hand of a clock is 6 inches long. How far does the tip of the minute hand move in 15 minutes? How far does it move in 25 minutes?
Answer:
Step-by-step explanation:
angle subtended at center in 15 minutes=360÷60×15=90°=π/4
distance traveled by minute hand=2πr/4=πr/2=6π/2=3π inches≈9.42 inches
distance travelled by minute hand in 25 minutes=2πr×25/60=50πr/60=5/6πr
≈5/6 π×6=5π inches ≈15.71 inches
point (-4,-8) Reflected across the x-axis
Answer:
(-4 , 8)
Step-by-step explanation:
The x-axis is the horizontal line. In this case, if you are reflecting over the x-axis, you are flipping the sign of the y-coordinate.
Same with the y-axis. If you are reflecting over the y-axis, you are flipping the sign of the x-coordinate.
In this case, reflect across the x-axis. Flip the sign of the y: (x , y)
(-4 , -8) reflected over the x-axis is (-4 , 8).
~
Drake spent $540 on books. Math books cost $60 and science books cost $80. If he bought a total of 8 books, how many of each kind did he buy?
Answer:
He bought 4 in total
The number of turtles in a lake increased by 20% between last year and this
year. Last year there were 110 turtles in the lake. What is the population
this year?
A. 88 turtles
B. 90 turtles
C. 132 turtles
D. 138 turtles
pls help me with these thx
Write a numeric expression for EACH phrase on the line provided:
Answer:
Step-by-step explanation:
x^2-4
5x+6
15-(x+3)
2(x-7)
Hope this is correct
combine another pipe and another
Answer:
3 and 3/8
Step-by-step explanation:
1, and 4/8 + 1, and 6/8 = 3 and 2/8
3 and 2/8 + 1/8 = 3 and 3/8
HELPP MEE PLEASEEEEEE
Answer:
wouldn't it be 5m....??
Find the slope. ASAP
AB contains A(3,-2) and B(-5,-4)
1. 1/3
2. 3
3. 1/4
4. 4
CAN SOMEONE PLEASE HELP ASAP
Answer:
See photo
Step-by-step explanation:
Which model represents 2.36 ÷ 4? A. Three groups of three tenths and four hundredths B. Three groups of five tenths and nine hundredths C. Four groups of three tenths and six hundredths D. Five groups of five tenths and nine hundredths
Answer:
Five groups of five tenths and nine hundredths
Step-by-step explanation:
Mathematically;
2.36 divided by 4 = 0.59
So we want to select from the options, the best representation of this
That will be
0.5 + 0.09
so our answer is 5 groups of five tents and nine hundredths
The model which represents 2.36 ÷ 4 is; Choice D: Five groups of five tenths and nine hundredths
We must perform the division 2.36 ÷ 4 first so that we have;
2.36 ÷ 4 = 0.59The result, 0.59 can then be written in words as; Five tenths and 9 Hundredths.
Ultimately, the model. which represents the expression 2.36 ÷ 4 is; Choice D: Five groups of five tenths and nine hundredths.
Read more on place value:
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A rectangular lawn has a diagonal path running across it. The lawn is 10m wide and 15m long. Work out the length of the path
Answer:
d = 18.02 m
Step-by-step explanation:
Given that,
A rectangular lawn has a diagonal path running across it. The lawn is 10m wide and 15m long.
We need to find the length of the path.
The diagonal of a rectangle can be calculated as follows :
[tex]d=\sqrt{10^2+15^2} \\\\d=18.02\ m[/tex]
So, the length of the path is 18.02 m.
a car travels 120 km in one and a half hours. what is the average speed
Answer:
The speed would be 60kph.
Answer:
80 mph (average)
Step-by-step explanation:
Split 120 into thirds, each one being half an hour.
120/3=40
Add two of them together, getting 80.
40x2(or 40+40)=80
Since the car travels 80 miles in one hour, 80 mph is the average speed.