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3 years ago

Answers needed fast Jason says his measurement is larger than Marco’s measurement because

Mathematics

1 answer:

tensa zangetsu [6.8K]3 years ago

5 0

Answer:

Step-by-step explanation:

Jason is not correct because 0.819 is not larger than 0.85. Marco's number is larger.

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(with steps please)

Yuki888 [10]

Answer:

21 of multiple choice and 17 of short answer questions

Step-by-step explanation:

Multiple choice = m
Short answer = s

Equations:

m + s = 38
2m + 3s = 93

Solve for s by eliminating m. Subtract the double of the first equation from the second one:

2m + 3s - 2(m + s) = 93 - 2(38)
3s - 2s = 93 - 76
s = 17

Find the value of m:

m = 38 - 17 = 21

3 0

3 years ago

At the movie theatre, child admission is $5.90 and adult admission is $9.70 . On Tuesday, 168 tickets were sold for a total sale

Sergeu [11.5K]

X= child ticket
y= adult ticket

COST EQUATION:
$5.90x + $9.70y=$1352.20
QUANTITY EQUATION:
x+y=168

Step 1:
Solve for one variable in either equation and substitute it in the other equation

x+y=168

subtract y from both sided
x=168-y

Step 2:
substitute x=168-y in other equation

5.90x + 9.70y=1352.20
5.90(168-y) +9.70y=1352.20

multiply 5.90 by everything in parentheses
(5.90*168)+(5.90*-y) +9.70y=1352.20
991.20-5.90y+9.70y=1352.20

combine like terms
991.20+3.80y=1352.20

subtract 991.20 from both sides
3.80y=361

divide both sides by 3.80
y=95 adult tickets

There were 95 adult tickets sold.

Hope this helps! :)

3 0

4 years ago

The sum of two numbers is 12 and their difference is 20. What is the smaller number?

zhannawk [14.2K]

Answer:

16 and -4

Step-by-step explanation:

Let the 2 numbers be x and y with x > y

x+y=12

x-y=20

Adding the 2 equations, term by term on both sides, will eliminate y leaving an equation in x that we can solve

(x+x)+(-y+y)=(12+20)

2x=32

x=16

16+y=12

y=-4

16+-4=12

12=12

16--4=20

20=20

3 0

3 years ago

A random sample of 150 recent donations at a certain blood bank reveals that 82 were type A blood. Does this suggest that the ac

kati45 [8]

Answer:

We reject H₀ Porcentage of type A blood donations differs from 40% (porcentage of population having type A blood)

Step-by-step explanation:

We are going to develop a proportion test.

Information we have:

Proportion P₀ = 40 % P₀ = 0,4 (porcentage of population having type A blood)

Sample size n = 150

Sample mean P = 82/ 150 P = 0,5466

As P₀ = 0,4 Q₀ = 0,6 P₀*Q₀ = 0,24

1.-Test Hypothesis:

H₀ null hypothesis P₀ = 0.4

Hₐ alternative hypothesis P₀ ≠ 0.4

2.- signficance level

a ) α = 0.01 we have a two tail-test α/2 = 0.005

b ) α = 0.05 α/2 = 0.025

Then from t-student table we get t(c) n = 150 df = 149

a ) α/2 = 0.005 t(c) = 2.581

b ) α/2 = 0.025 t(c) = 1.962

3.-Compute t(s)

t(s) = ( P - P₀ ) / √P₀Q₀/n

Plugging in known values

t(s) =[ ( 0.5466 - 0,4 )*√150 ] / √0.24

t(s) = 0,1466 * 12.25 / 0.4899

t(s) = 3.6657

Compare t(s) and t(c)

t(s) > t(c) 3.6657 > 2.581

Then t(s) is out of the acceptance region we reject H₀.

Simple inspection led us see that for

α/2 = 0.025 t(c) = 1.962

The situation is the same

6 0

3 years ago

Answer these questions please I'm really desperate. please im going to fail if I dont get this right

Drupady [299]

Answer-

$g(x)=-3x$

Solution-

First of all we have to get the value of f, as two point (0, -1) and (1, 2), we can get the equation by applying two point formula of straight line.

$\Rightarrow \dfrac{y-y_1}{y_2-y_1}=\dfrac{x-x_1}{x_2-x_1}$

$\Rightarrow \dfrac{y+1}{2+1}=\dfrac{x-0}{1-0}$

$\Rightarrow \dfrac{y+1}{3}=\dfrac{x}{1}$

$\Rightarrow \dfrac{y+1}{3}=x$

$\Rightarrow {y+1}=3x$

$\Rightarrow y=3x-1$

$\Rightarrow f(x)=3x-1$

Translating any point with coordinate as (x,y) 1 unit down, becomes (x, y-1)

So the new function will be,

$\Rightarrow (y-1)=3x-1$

$\Rightarrow y=3x$

Reflecting any point with coordinate as (x,y) over x axis, becomes (x, -y)

So the new function will be,

$\Rightarrow -y=3x$

$\Rightarrow y=-3x$

$\Rightarrow g(x)=-3x$

3 0

3 years ago

**Answers needed fast** Jason says his measurement is larger than Marco’s measurement because

Answers needed fast Jason says his measurement is larger than Marco’s measurement because