Answer: 131 miles; 21 x 3 = 63 + 17 x 4 = 68. 63 + 68 = 131 miles
Hence, the cyclist ride in [tex]7[/tex] hour is [tex]131[/tex]miles.
What is the speed?
The magnitude of the change of its position over time or the magnitude of the change of its position per unit of time; it is thus a scalar quantity.
Here given that,
A cyclist rode at a constant speed of [tex]21[/tex]mph for [tex]3[/tex] hours. Then she decreased her rate of speed to [tex]17[/tex] mph for [tex]4[/tex] hours.
[tex]21[/tex] x [tex]3[/tex] [tex]=63 + 17 (4)[/tex]
[tex]= 131[/tex] miles
Hence, the cyclist ride in [tex]7[/tex] hour is [tex]131[/tex]miles.
To know more about the speed
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Evaluate b(x)=5x-5/3x-16
Answer:
hope i helped.
Question 9
Find the measure of the exterior angle.
Is this a function? (2,3)(0,4)(5,9)(6,4)
-yes?
-No?
Answer:
yes
Step-by-step explanation:
Mark Went to the store and purchase nine pairs of socks and three packages of undershirts for $8.28 each he also purchase a pair of pants for $32 he spent a total of $77.99 how much did he pay for each pair of socks write an equation using the variable S
Answer:
He paid $2.35 for each pair of socks.
An equation using the variable S is
$77.99 = 9S + (3 × $8.28) + $32
Step-by-step explanation:
Let S be the cost of a pair of socks
From the question, Mark purchase nine pairs of socks, that is, the total cost of the pairs of socks is 9S
He purchase three packages of undershirts for $8.28 each; the total cost of the three packages of shirt will be 3 × $8.28 = $24.84
and he also purchase a pair of pants for $32
Since he spent a total of $77.99, we can write that
$77.99 = 9S + (3 × $8.28) + $32
Now, we can determine S, the cost of a pair of socks
$77.99 = 9S + (3 × $8.28) + $32
$77.99 = 9S + $24.84 + $32
$77.99 = 9S + $56.84
9S = $77.99 - $56.84
9S = $21.15
S = $21.15/9
S = $2.35
Hence, he paid $2.35 for each pair of socks.
write a fraction whose numerator and denominator add up to 9
Answer:
5/4
Step-by-step explanation:
The factors of -24 are listed in the table. Which factors of -24 are used to factor x-5x - 24 ?
The factors of -24 which should be used to factorize the given quadratic equation are -8 and 3.
It is required to factorize the quadratic equation [tex]x^2-5x - 24[/tex] using the factors of -24.
The required combination of factors should be -8 and 3 because,
[tex]-8+3=-5\\-8\times3=-24[/tex]
Now, factorize the quadratic equation as,
[tex]x^2-5x - 24=x^2-8x+3x-24\\=x(x-8)+3(x-8)\\=(x-8)(x+3)[/tex]
Therefore, the factors of -24 which should be used to factorize the given quadratic equation are -8 and 3.
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The shadow of a 5-foot tall post is 10 feet long. At the same time, a tree casts a shadow that is 24 feet long. What is the height of the tree?
A.
14 feet
В.
12 feet
C.
18 feet
D. 2 feet
Answer:
C. 12 feet.
Step-by-step explanation:
The lamp post has a shadow that's twice as long as it'a actual height. The tree's shadow is 24 feet long, so it would be 24/2, which is 12 feet.
Question 9 (10 points)
Why did the Europeans decided to take African's as slaves?
They hated them
The European's knew that the African's would not die as quickly as indentured
servants because they came from a warm climate.
African tribes sold rival tribes to the European's for things, such as, radios
European's lived close to Africa
Answer:
B
Step-by-step explanation:
peepeepoopoo check
find the sum 6/10 + 5/10
Answer:
11/10 or 1.10
Step-by-step explanation:
Adding the numerator with common denominator.
I AM GOING TO DROP OUT OF SCHOOL
Write 675,000,000 in scientific notation.
Answer:
= 6.75 × 10^8
Step-by-step explanation:
Find each unit rate. Round to the nearest tenth if necessary.
200 meters in 34 seconds
Answer:
60
Step-by-step explanation:
Solve for x: -2x – 7 = 3
Answer:
x=-5
Step-by-step explanation:
-2x=3+7
or,-2x=10
or,x=-10/2
x=-5
Answer:
x = -5
Step-by-step explanation:
Add 7 to each side, so it now looks like this: -2x = 10Divide each side by -2 to cancel out the -2 next to x. It should now look like this: x = -5I hope this helps!
Evaluate the expression. 1 + |7|. The answer is probably really easy i'm just dumb-
Answer:
8!
Step-by-step explanation:
I'm sure you're still really smart, you just don't understand it :)
Those two bars mean the absolute value of whatever's inside of them. Absolute value is always positive, so if you had 34 inside of the bars, it would still be positive 34.
Now that we know what those bars mean, the expression is really this:
1 + 7
I'm sure you can solve that :)
Answer: 8
Step-by-step explanation: The answer will be 8. Plus you're not dumb.
find x. use picture for question
What is the domain of the relation?
-4 <= x <= 4
-4 < x < 4
-4 <= x <= 6
-4 < x < 6
Answer:
Step-by-step explanation:
Answer:C->-4<=X<=6
Second answer:A -4<=y<=4
Third answer: yes
According to the given graph, the domain of the function is -4 to 6, So Option C is correct
What are functions?Function is a relation between a set of inputs and a set of outputs which are permissible. In a function, for particular values of x we will get only a single image in y. It is denoted by f(x).
Vertical line test:-
Whenever we want to check whether a given expression is a function or not we can apply a vertical line test, in this test we check for a single image of x , we are getting a single image or more.
If we get more images then it will not be a function.
For example, let us take, y² = 4ax
y = ±√4ax
For single value of x we get two values of y
Hence, it will not be a function.
Given that,
The graph,
Which has values of x in the interval of -4 to 6
And the value of y in the interval of -4 to 4
So, for any function all the values of x for which function is defined
that interval is a domain of a function
And, for input of values of x all the output values of y are known as range of a function
Domain: -4 ≤ X ≤ 6
Range: -4 ≤ Y ≤ 4
Hence, the domain is -4 ≤ X ≤ 6
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the ratio of boys to girls in your class is 3:4 there are 20 girls in the class how many boys are there ?
Solve for m in the following equation:
x= 3k(n + m)
I need help with this
Answer:
First add all the equations like (11y-32)+(3x-16)+(6x+7)=180
Step-by-step explanation:
You would first combine all the like terms so put all the variables on one side and the numbers on the other. After you have done that, you would just solve.
what is the actual distance between the two places which is represented by 4.5 cm on a map if the map is drawn to the scale 1:100000
Answer:
12
Step-by-step explanation:
Consider this polynomial, where a is an unknown real number.
Braulio
(a. correctly
b. incorrectly)
found the value of a because he
(a. correctly performed synthetic division
b. should’ve solved the equation a + 14 = -17
c. should have used -1 instead of 1
d. made a mistake in the fourth column of his work )
zahra
(a. incorrectly
b. correctly)
found the value of a because she
(a. incorrectly applied the powers to -1
b. should have substituted 1 instead of -1
c. should have solved the equation a + 18 = -17
d. correctly substituted and evaluated the polynomial)
Answer:
Step-by-step explanation:
Correct steps to find the value of 'a' should be,
Braulio's synthetic division should be,
-1 | 1 5 a -3 11
-1 -4 (4 - a) (a - 1)
1 4 (a - 4) (1 - a) (a + 10)
Here remainder is (a + 10).
So (a + 10) = 17 ⇒ a = 7
Braulio Incorrectly found a value of 'a' because he should have used (-1) instead of 1.
Zahra's calculation by remainder theorem should be,
p(x) = x⁴ + 5x³ + ax² - 3x + 11
p(-1) = (-1)⁴ + 5(-1)³ + a(-1)² - 3(-1) + 11
= 1 - 5 + a + 3 + 11
= (a + 10)
Since, remainder of the solution is 17,
(a + 10) = 17 ⇒ a = 7
Zahra incorrectly found the value of 'a' because she incorrectly solved the powers to (-1).
Answer: incorrectly, should have used -1 instead of 1
incorrectly, incorrectly applied the powers to -1
Step-by-step explanation:
Write an equation for a line that is parallel to y = -4x + 2 and passes through the point (-2, 5).
Answer:
y = -4x - 3
Step-by-step explanation:
y = -4x + 2
Substitue Y and X and turn 2 into b(or y intercept)
5 = -4(-2) + b
Solve for b
5 = 8 + b: subtract 8 from both sides
-3 = b
substitute for 2 with same slope(to keep parrallel)
y = -4x - 3
What has been the best method for you to learn mathematics?
Answer: Here are some steps that help you learn and master math quickly:
Engage With the Subject.
Start From the Basics.
Develop Number Sense Rather Than Memorizing.
Have a Goal in Mind.
Answering Practice Questions Is Crucial.
Keep Track of Math Vocabulary.
Tricks and Tips to Learn Math Easily.
Master Problem Solving.
Step-by-step explanation:
The football team has a total of 50 jerseys. There are 5 medium-sized jerseys. What percent of the
jerseys are medium-sized jerseys?
Answer:
10%
Step-by-step explanation:
[tex]5 \div 50 = 0.1[/tex]
[tex]0.1 \times 100 = 10[/tex]%
URGENT AND EASY 8TH GRADE MATH
Answer:
k<-62/7
Step-by-step explanation:
I hope it helps.
Answer:
k> 56
Step-by-step explanation:
-35 -k + 6< -85
-29-k < -85
+29 +29
_______________
-k> -56
/-1
k> 56
What is the Slope??????????????????
Answer:
The Slope Is -3
Step-by-step explanation:
Hope This Helps
Plz Mark Brainliest!
If f(x) = 2x - 3, find f(-2).
Answer:
f(-2) = -7
Step-by-step explanation:
f(-2) = 2(-2) - 3
f(-2) = -4 -3
f(-2) = -7
5x4=20 is a true open or false statement
will mark brainliest
Answer:
this is true, just count by five four times
Step-by-step explanation:
Draw the image of triangle △ABC under a dilation whose center is P and scale factor is 1/3.
Answer:
Here you gooooo
Step-by-step explanation:
Answer:
khan
Step-by-step explanation:
The owner of a health club decides to reduce the $35 membership fee by $5. What is the approximate percent
decrease in the fee?
Answer:
14%
Step-by-step explanation:
