Answers
Answer:
18
Step-by-step explanation:
= -4 x (-5) - 2
= 20 - 2
= 18
Answer:
18
Step-by-step explanation:
-4x - 2
-4 (-5) - 2
(20) - 2
18
Related Questions
Why did most ancient cultures writ out their mathematical texts in words
Answers
Answer:
They had no numeral for zero in their number system.
Without a zero, it is hard to accurately represent real world problems. This makes it easier to use words rather than numbers.
Step-by-step explanation:
make it braintliest please
2x + 7 = 19
X=?
Which one is the answer
Answers
Answer:
x=6
Step-by-step explanation:
first you subtract 7 and 7 and you also have to subtract 7 and 19 and the answer will be 12 then you divide 2 and 2 to make it only x so if you divide 2 and 2 you also have to divide the 12 so 12 divided by 2 equal 6 so the x is equal to 6
24/58 as a whole number percent
Answers
Answer:
41.379310344828
Step-by-step explanation:
I used my paper
If one of the diagonals of a rectangle is 20cm and the difference between the length and the width is 4cm. What is the area of the triangle
Answers
Answer:
192cm²
Step-by-step explanation:
The diagonal of the rectangle is expressed using the formula:
d = √l²+w²
l is the length
w is the width
Given d = 20
20 = √l²+w²
400 = l²+w² .... 1
Since the difference between the length and the width is 4cm, then;
l - w = 4 ... 2
l = 4 + w
Substitute equation 2 into 1;
400 = (4+w)²+w²
400 = 16 +8w + w² +w²
400 = 16 + 8w + 2w²
2w²+8w - 384 = 0
w²+4w - 192 = 0
w = -4±√4²-4(-192)/2
w = -4±√16+768/2
w = -4±28/2
w = -4+28/2
w = 24/2
w = 12
Since l = w+4
l = 12+4
l = 16
Area of the rectangle = 16 * 12
Area of the rectangle = 192cm²
Answer:
rytytyf
Step-by-step explanation:
yiyiuyiuy
Two cars are heading toward the same intersection. Car A travels due east at 20 miles per hour, and Car B travels due north at 50 miles per hour. At what rate, in miles per hour, is the distance between the two cars decreasing when Car A is 0.375 miles from the intersection and Car B is 0.5 miles from the intersection?
Answers
Answer:
the distance between them is decreasing at a rate of 2 mph.
Step-by-step explanation:
List all given rates and the unknown rate.
Write the formula that relates the variables in the problem: x, y, and s.
There’s a right triangle in the diagram, so you use the Pythagorean Theorem:
For this problem, x and y are the legs of the right triangle, and s is the hypotenuse, so
Differentiate with respect to t.
Use the Pythagorean Theorem again to solve for s.
x = 0.4
y = 0.3
You can reject the negative answer because s obviously has a positive length. So s = 0.5.
Now you’ve got everything you need to substitute into the differentiation result and solve for ds/dt.
This negative answer means that the distance, s, is decreasing. Thus, when car A is 3 blocks north of the intersection and car B is 4 blocks east of the intersection, the distance between them is decreasing at a rate of 2 mph.
Which equation can be used to find the missing angle?
a. X + 90 = 180
b. X + 40 = 90
c. 180 - 40 = x
Answers
Answer:
A, all three angles of a triangle equal 180
Answer:
b. x + 40 = 90
Step-by-step explanation:
This is a right triangle, so we already know one of the angles is 90 degrees. The other angles combine to make the other 90 degrees. So, we have to figure out what the other angle is, as the second one is 40 degrees. To figure that out, use the equation x + 40 = 90. (This is extra, but x is 50, right?)
[EASY] Will give 20 points in next question if correct *photo attached/underline*
Answers
Answer:
ummmmmmmm
0.4?
Pl help it’s for a grade I will give you Brainly if right
Answers
Answer:
2/4
Step-by-step explanation:
Need help plz ASAP need to fin this assignment
Answers
Answer:
<ABC = 51°
Step-by-step explanation:
Given
<A = 2x -15°
<B = x - 5°
< C = 148°
Now
<A + <B = < C ( Exterior angle of a triangle is equal to the sum of two opposite interior angles)
2x -15° + x - 5° = 148°
3x - 20° = 148°
3x = 148° +20°
3x = 168°
x = 168° / 3
X = 56°
Now for Angle B
= 56° - 5°
= 51°
Hope it helps :)
what is 2.7 divided by nine?
Answers
Answer:
.3
Step-by-step explanation:
2.7 divided by 9 is 0.3
What is the area of the triangle if the base is 5 centimeters and the height is 6 centimeters?
16 inches
12 feet
4 m 3
15 cm 2
Answers
Answer:
15 cm
Step-by-step explanation:
6x5 divide by 2
Answer:
15 cm^2
Step-by-step explanation:
52,300,000 in scientific notation
Answers
Answer:
5.23 × 10 ^7
Step-by-step explanation:
Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the 10 If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.
Convert 45.1% to a decimal.
Answers
Answer:
Queen Messy here!
0.451
moving the decimals to the left when dividing (:
Step-by-step explanation:
What is the correct equation to solve for x ?
Answers
x=15.96
x=17.6
x=11.81
x=12.23
PLEASE HELP ME ASAP!!!!
Answers
What is the slope-intercept equation of the line whose y-intercept is
8 with slope -5?
Answers
Answer:
y = - 5x + 8
Step-by-step explanation:
Given that :
Intercept = 8
Slope = - 5
Recall, the general. Slope - intercept equation :
y = bx + c
Where;
b = slope ; c = intercept
Plugging the Given slope and intercept values, equation becomes ;
y = - 5x + 8
Are the ratios 1:2 and 7:20 equivalent?
Answers
Answer:no
Step-by-step explanation:
How many times greater is the area circle 1( radius 12) of than the area circle 2( radius 4) of ?
Answers
Answer:
The area of circle 1 is 9 times greater than area of circle 2.
Step-by-step explanation:
Given that:
Radius of circle 1 = 12
Area of circle 1 = πr²
Area of circle 1 = [tex]3.14*(12)^2 = 3.14*144[/tex]
Area of circle 1 = 452.16
Radius of circle 2 = 4
Area of circle 2 = [tex]3.14*(4)^2 = 3.14*16[/tex]
Area of circle 2 = 50.24
Let,
x be the number of times circle 1 is bigger than circle 2.
Area circle 1 = x * Area circle 2
[tex]\frac{452.16}{50.24}=\frac{50.24x}{50.24}\\\\x=9[/tex]
Hence,
The area of circle 1 is 9 times greater than area of circle 2.
Help me on math problem
Answers
Answer:
Step-by-step explanation:
The first one
Can someone help me please
Answers
Answer:
| - 16 |
Step-by-step explanation:
The absolute value function always gives a positive value, that is
| - a | = | a | = a
Then
| 6 | = 6
| - 16 | = | 16 | = 16
Thus the largest number from the list is | - 16 |
Solve for X
8(x— 4) = –64
X =
Answers
Answer:
8(x-4)=-64
8x-32=-64 +32
8x=-32 :8
x=-4
Step-by-step explanation:
prove me wrong
What are the answers here?
Answers
2r = -2
r =-1
Answer:
Step 1: Subtract 8 to -10 because it is a positive
Step 2: Divide 2r by -18
Step-by-step explanation:
1) Find
dy/dx
given y^2= x
Answers
we can cancel out the variable “d” by simply dividing. after we do so, we are left with y/y^2. when dividing variables with exponents, you subtract the exponent from the denominator’s variable from the exponent in the numerators variable.
for example, since we have just “y” as the numerator, we can think of it as “y^1”
so, y^1/y^2
y^1-1=y^0
we are left with y^0 or 1, over y^1 or y. think of this as 1/y
bet you cant answer this lol
s1 = 20, s1 = 15, s1 = 9, and s1 = 6
Answers
Answer:
50
Step-by-step explanation:
help pls due in 5 minutes
Answers
Answer:
the answer to this is 7 7/10
Answer:
4th option
Step-by-step explanation:
[tex]5\frac{1}{2}*1 \frac{2}{5}=\frac{11}{2} *\frac{7}{5} =\frac{77}{10}=7\frac{7}{10}[/tex]
Xi-ling has a net income that is 5% of her monthly salary of $2,315. Xi-ling would like to keep a net income of $50 and put any additional money towards paying down debt. How much more can Xi-ling put towards paying down debt each month?
a.
$55.75
b.
$65.75
c.
$115.75
d.
$165.75
Answers
Answer:
it going be b 65.75
Step-by-step explanation:
just did test
The total amount of money put down by Xi-ling monthly is mathematically given as
y=65.75
What is the total amount of money put down by Xi-ling monthly?Question Parameters:
Xi-ling has a net income that is 5% of her monthly salary of $2,315. Xi-ling would like to keep a net income of $50
Generally, 5% of her monthly salary is mathematically given as
x=0.05*2315
x=115.75
Therefore, if she has a net income equal to 115.75
y=115.75-50
y=65.75
Xi-ling puts y=65.75 towards paying down debt each month.
For more information on Arithmetic
https://brainly.com/question/22568180
Stu is riding his bike at a steady pace of 11 miles per hour. Write an equation to model how far he travels on his bike x after riding for 30 minutes.
Answers
Answer:
you in jacksonville
Step-by-step explanation:
Combine like terms to simplify the expression:
2 + 7x + 3 – 5x - 1 =
A.4 + 2x
B.4 - 2x
C.6x
D.5-2x
E.5+12x
Answers
Answer:
A. 4 + 2xStep-by-step explanation:
2 + 7x + 3 – 5x - 1
= 2 + 3 - 1 + 7x - 5x
= 4 + 2x
Paul has $145 in his savings account. He earns $36 a week mowing lawns. If Paul saves all of his earnings, after how many weeks will he have no more than $450 saved?
Answers
Answer:
Paul will have no more than $ 450 in next 8 weeks.
Step-by-step explanation:
From the information given on statement, we know that Paul saves all of his earnings weekly. Then, the money save is equal to the sum of initial amount ([tex]C_{o}[/tex]), measured in monetary units, and week earning ([tex]R[/tex]), measured in monetary units, multiplied by a number of weeks ([tex]n[/tex]), dimensionless:
[tex]C =C_{o} + n\cdot R[/tex] (1)
Now we clear the number of weeks within the formula:
[tex]n = \frac{C-C_{o}}{R}[/tex]
If we know that [tex]C_{o} = \$\,145[/tex], [tex]C = \$\,450[/tex] and [tex]R = \$\,36[/tex], then the number of weeks is:
[tex]n = \frac{\$\,450-\$\,145}{\$\,36}[/tex]
[tex]n = 8.472[/tex]
Paul will have no more than $ 450 in next 8 weeks.
Answer:
Paul will have no more than $ 450 in next 8 weeks.
Step-by-step explanation:
to the nearest 50 square feet what is the area of the actual store?