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2 years ago

Someone helpplz (I'm stressed don't try to get fxree points please)

Mathematics

1 answer:

Sav [38]2 years ago

4 0

here ya go!!! I hope this helps <3

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Which of the following pairs is not correctly written in scientific notation

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B in the answer <span>not correctly written in scientific notation</span>

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snow_tiger [21]

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2 years ago

ozzi

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Step-by-step explanation:

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2 years ago

In a store, 1 can of soup costs $1.80. The store also sells a pack 6 cans of soup. A customer who buys 1 pack saves 15% compared

Likurg_2 [28]

Answer:

$\$1.62$

Step-by-step explanation:

Let

x-----> the cost of one pack of 6 cans of soup

step 1

Find the cost of 6 cans of soup

$6(1.80)=\$10.8$

step 2

Find the cost of one pack of 6 cans of soup

$100\%-15\%=85\%=85/100=0.85$

$x=0.85(\$10.8)=\$9.18$

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Find the money saved

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4 0

3 years ago

F(t) = -(t-2) (t-15)

Goryan [66]

Answer:

smaller (t) = 2 and this in coordinates form (2,0)

larger (t) = 15 and this in coordinates form (15,0)

the vertex of the parabola = $(\frac{17}{2} ,\frac{169}{4} )$ or in decimals (8.5, 42.25)

Step-by-step explanation:

For the zeros of the function take each bracket and make it equal to zero.

SMALLER (t):

(t-2)=0

(add 2 for both sides)

t=2

LARGER (t):

(t-15)=0

(add 15 for both sides)

t=15

For the vertex of the parabola you do:

step1: expand the brackets:

f(t)=-(t-2)(t-15)

f(t)= $-t^{2} +17t-30$

step2: define a,b and c using the expression $ax^{2} +bx+c$ :

a= -1 (the coefficient of $t^{2}$ )

b= 17 (the coefficient of t)

c= -30 (the single number without a letter)

step3: sub the values in the formula $-\frac{b}{2a}$ to find the x coordinate of the vertex :

$-\frac{b}{2a}$

= $- \frac{17}{2*-1}$

= $\frac{17}{2}$ or in decimals 8.5

step4: sub the value of t (the x-coordinate) in equation f(t):

f(t)= $-t^{2} +17t-30$

f ( $\frac{17}{2}$ ) = - $(\frac{17}{2} )^{2}$ + 17× $\frac{17}{2}$ - 30

= $-\frac{289}{4}$ + $\frac{289}{2}$ -30

= $\frac{169}{4}$ or in decimals 42.25

(THIS IS A PICTURE OF THE GRAPH↓)

6 0

3 years ago