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3 years ago

HELP PLEASEEEEEEEEEEE

Mathematics

2 answers:

Strike441 [17]3 years ago

6 0

Answer:

the numbee from left to right :

-1.5

-0.25

0.75

1.25

2.25

Arada [10]3 years ago

4 0

Answer:

-3/2, -15%, 0.80, 143%, 2 1/4

Step-by-step explanation:

Convert the fractions into decimals:

2 1/4 = 2.25

-15% = -0.15

143% = 1.43

-3/2 = -1.5

0.80 = 0.80

The order from least to greatest is -3/2, -15%, 0.80, 143%, 2 1/4

Hope this helps :)

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a jar of quarters and dimes has a total value of 20.70 the jar has 10 more quarters than dimes to find the numbers of quarters a

Oksanka [162]

Answer:

Her equation system is incorrect

Step-by-step explanation:

Remember that

1 dime=$0.10

1 quarter=$0.25

Let

x------> the number of quarters

y-----> the number of dimes

we know that

0.25x+0.10y=20.70 ------> equation A

x=10+y -----> equation B

Her equation system is incorrect, because in her second equation she exchanged the variables, using x instead of y and y instead of x.

7 0

3 years ago

Find a cubic function f(x) = ax3 + bx2 + cx + d that has a local maximum value of 3 at x = −2 and a local minimum value of 0 at

Helen [10]

$f(x)=ax^3+bx^2+cx+d$

$\implies f'(x)=3ax^2+2bx+c$

Local extrema occur wherever $f'(x)=0$ .

We want

a local max of 3 when $x=-2$ , which means

$f(-2)=-8a+4b-2c+d=3$

$f'(-2)=12a-4b=0\implies3a=b$

and

a local min of 0 when $x=1$ , which means

$f(1)=a+b+c+d=0$

$f'(1)=3a+2b+c=0$

Solve the system for $a,b,c,d$ ; you should get

$a=\dfrac19,b=\dfrac13,c=-1,d=\dfrac59$

so that the cubic we're looking for is

$\boxed{f(x)=\dfrac{x^3}9+\dfrac{x^2}3-x+\dfrac59}$

3 0

4 years ago

Read 2 more answers

What is the mean of 9 9 9 9 10 10 10 11

amid [387]

Answer:

9.625

Step-by-step explanation:

9+9+9+9+10+10+10+11=77

you add all the numbers together. and then divide them by the number of numbers so.

77/8=

9.625

6 0

3 years ago

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Solve the system of equations. − 5 x + 4 y = 3 x = 2 y − 15 −5x+4y=3 x=2y−15

Kitty [74]

Answer:

x=9, y=12. (9, 12)

Step-by-step explanation:

-5x+4y=3

x=2y-15

--------------

-5(2y-15)+4y=3

-10y+75+4y=3

-6y+75=3

-6y=3-75

-6y=-72

6y=72

y=72/6=12

x=2(12)-15=24-15=9

x=9, y=12.

7 0

3 years ago

-1/2-(-5/9) with explanation!

tekilochka [14]

Answer:

1 Remove parentheses.

-1/2-5/9

2 Find the Least Common Denominator (LCD) of 1/2, 5/9 In other words, find the Least Common Multiple (LCM) of 2,9

LCD = 18

3 Make the denominators the same as the LCD.

-1 x 9 /2 x 9 +5 x 2 /9 x 2

4 Simplify. Denominators are now the same.

-9/18 +10/18

5 Join the denominators.

-9 + 10/ 18

6 Simplify.

1/18

and your answer is 1/18

Step-by-step explanation:

3 0

3 years ago

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