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EastWind [94]
3 years ago
5

While walking outside on a field trip 75%,or 15 of the students in the class wore jackets Find the number of students in the ent

ire class.
Mathematics
2 answers:
quester [9]3 years ago
7 0
Well, for the first question, just multiply 67 by .71 and you'll get your answer, 47.57% 

<span>For question 2, just divide 205 by 41, which is 5, and we know that 1/5 in decimal form is .2, and .2 is equivalent to 20% </span>

<span>Question 3, we know that 75% is 3/4 of 100%, so all we have to do is divide 15 by 3 to get 5, then multiply 5 by 4 to get the total students in the class, 20. </span>

<span>For question 4, just divide 24 by 40 to get .6, which we know equals 60%</span>
Kobotan [32]3 years ago
7 0
The answer is 60 because you subtract it
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Frances can complete 91oil changes in 7 days. How many oil changes can Frances complete in 11days? oil changes
Natali [406]

Answer:

143

Step-by-step explanation:

lets make a fraction:

so

91 oil changes/7days

lets take "x" as the unknown # of oil changes:

so

x/11

91/7=x/11

we can cross multiply:

91*11=7*x

1001=7x

143=x

so 143 oil changes in 11 days

Hope this helps!

4 0
3 years ago
Read 2 more answers
For f(x)=2x+1 and g(x)=x^2-7, find (f+g)(x) A. 2x^2-15 B.X^2+2x-6 C.2x^3-6 D.x^2+2x+8
Advocard [28]

Answer:

C

Step-by-step explanation:

(f + g)(x) = f(x) + g(x) , thus

f(x) + g(x)

= 2x + 1 + x² - 7 ← collect like terms

= x² + 2x - 6 → C

5 0
3 years ago
What is the area of the figure below
Viefleur [7K]

Answer:

390cm

Step-by-step explanation:

1. find area of rectangle

 1. 15cm x 20cm= 300 cm

2. find area of triangle

  1. 1/2 (12 x 15)= 90cm

300+90

4 0
3 years ago
A parallelogram has coordinates A(1, 1), B(5, 4), C(7, 1), and D(3, -2). What are the coordinates of parallelogram A′B′C′D′ afte
saul85 [17]

Hey there! I'm happy to help!

First, we need to rotate our points 180° about the origin. To find the coordinates after such a rotation, we simply find the negative version of each number in the ordered pair, which can be written as (x,y)⇒(-x,-y).

Let's convert this below

A: (1,1)⇒(-1,-1)

B: (5,4)⇒(-5,-4)

C: (7,1)⇒(-7,-1)

D: (3,-2)⇒(-3,2)

Now, we need to translate these new points five units to the right and one unit down. This means we will add 5 to our x-value and subtract 1 from our y-value. This will look like (x,y)⇒(x+5,y-1). Let's do this below.

A: (-1,-1)⇒(4,-2)

B: (-5,-4)⇒(0,-5)

C: (-7,-1)⇒(-2,-2)

D: (-3,2)⇒(2,1)

Therefore, this new parallelogram has coordinates of A'(4,-2), B'(0,-5), C'(-2,-2), and D'(2,1)

Now you know how to find the coordinates of translated figures! Have a wonderful day! :D

5 0
3 years ago
Which reason justifies Statement 5?
zloy xaker [14]

Answer:

The answer is A. Substitution

Step-by-step explanation:

Looking at the previous proofs, you can see that:

∠Y≅∠4

∠Z≅∠6

∠X + ∠4 + ∠6 = 180°

Statement 5 then replaces ∠4 and ∠6 with ∠Y and ∠Z, respectively. Replacing it means that it was substituted with the GIVEN values by the previous statements.

The best answer is the Substitution.  

6 0
3 years ago
Read 2 more answers
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