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2 years ago

Please help!!!!!!!!!!!! will mark brainliest!

Mathematics

2 answers:

Ad libitum [116K]2 years ago

8 0

It's the 3rd one: y= √(2x-6) + 1

Why?

for x = 3 →→ y =√2(3)-6 +1 →→ y = 1, which verifies your graph

Shalnov [3]2 years ago

6 0

Answer:

Step-by-step explanation:

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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

2 years ago

How can you identify the parts of an expression using mathematical terms ?

rewona [7]

An expression containing variables, numbers, and operation symbols is called an algebraic expression. ...Find the terms, coefficient, and degree for this expression: . ...List the terms, coefficients, and degree of each term in the following expression: . ...

8 0

2 years ago

For questions 1-4 The spinner to the left is spun 100 times.

lara [203]

Answer:

1) If it is spun 250 times, it will not land on W 207 times.

2) If it is spun 100 times, it will land on N 17 times (rounded up).

3) 1 out of 6

4) It has the same answer as 1) (If it is spun 250 times, it will not land on W 207 times.)

4 0

2 years ago

Two supplementary angles are in the ratio of 31:5 find angles

ad-work [718]

Answer:

The angles are 155° and 25°.

Step-by-step explanation:

Given:

Two supplementary angles are in the ratio of 31:5.

Now, to find the angles.

The sum of two supplementary angles = 180°

Let the ratio of the angles be $31x\ and\ 5x$ .

So, according to question:

$31x+5x=180\°$

$36x=180\°$

Dividing both sides by 36 we get:

$x=5$

So, $31x=31\times 5=155\°.$

And, $5x=5\times 5=25\°.$

Therefore, the angles are 155° and 25°.

7 0

2 years ago

Can someone please teach me how to add, subtract, multiply and divide negative numbers?

dedylja [7]

If both numbers are negative u add those up and ur answer will be a negative. so number one is negative 9.
if there is more positive ur answer will be a positive. so number 2 is 13.
number is more complicated so negative 3 +4 is 1 because u have more positive and u just subtract those then 1 minus 8 equals negative 7 and negative 7 minus 7 is 0. hope this helps

3 0

2 years ago

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