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2 years ago

On a quiz there are four multiple-choice questions worth 3 points each and two true/false questions

Mathematics

1 answer:

leonid [27]2 years ago

6 0

Answer:

3.4

Step-by-step explanation:

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When seven times a number is deceased by 3, the result is 25. What is the number?

zepelin [54]

7n-3= 25

7n-3(+3)= 25(+3)

(7n= 28)/7

n=4

6 0

3 years ago

Read 2 more answers

What is the product of all constants $k$ such that the quadratic $x^2 + kx +15$ can be factored in the form $(x+a)(x+b)$, where

Setler79 [48]

Answer:

$k=-16,k=-8,k=8,k=16$

Step-by-step explanation:

We are given quadratic equations as

$x^2+kx+15$

and it can be factored as

$=(x+a)(x+b)$

now, we can multiply factor term

$(x+a)(x+b)=x^2+(a+b)x+ab$

now, we can compare

$x^2+(a+b)x+ab=x^2+kx+15$

so, we get

$k=a+b$

$ab=15$

we are given that

'a' and 'b' are integers

so, we can find all possible factors

$15=(-1\times -15),(1\times 15)$

$15=(-3\times -5),(3\times 5)$

so, we can find k

At $(-1\times -15)$ :

$k=a+b$

we can plug values

$k=-1-15$

$k=-16$

At $(1\times 15)$ :

$k=a+b$

we can plug values

$k=1+15$

$k=16$

At $(-3\times -5)$ :

$k=a+b$

we can plug values

$k=-3-5$

$k=-8$

At $(3\times 5)$ :

$k=a+b$

we can plug values

$k=3+5$

$k=8$

So, values of k are

$k=-16,k=-8,k=8,k=16$

6 0

3 years ago

Randall wants to buy a pizza. He can select from 5 different sizes, 4 types of crust, and 12 toppings for his pizza. Which of th

hjlf

Answer:

240

Step-by-step explanation:

5x4x12=240

if you multiply the amount of sizes he can get times the amount of crust sizes he can get you get the pizza it's self (20)

now including the toppings (12) this means 20x12 gets you the amount of toppings on those induviduale pizza's.

Hope this helps!

Brainliest please!

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Have a great day!

8 0

2 years ago

Read 2 more answers

Which of these characteristics does a rhombus have

iren2701 [21]

Answer: opposite sides with equal length

Step-by-step explanation:

5 0

3 years ago

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The graph below shows a proportional relationship between x and y

Snezhnost [94]

Answer:

You get the answer by seeing if the line on the graph passes through the origin and if it does you see how many there is for every 1 thing.

Step-by-step explanation:

3 0

3 years ago