3 years ago

Is this a linear f(x)= 7x^2+4

Mathematics

1 answer:

Luden [163]3 years ago

4 0

Answer:

Yes

Step-by-step explanation:

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Solve the quadratic equation.<br> (a + 5)2 +36 = 9

Andrej [43]

Answer:

No solution unless you want to solve for an imaginary number which in that case $a=27i-5$

Step-by-step explanation:

$(a+5)^{2} +36=9$

$(a+5)^2=-27$

$a+5=\sqrt{-27}$

Here you can stop and say "no solution" since you cannot square root a negative number, but if you want you can still solve for an imaginary number:

$a+5=\sqrt{-1} \sqrt{27}$

$a+5=27i$

$a=27i-5$

6 0

3 years ago

Find the solutions of 6(2-7x)+x(7x-2=0)

azamat

$6(2-7x)+x(7x-2)=0$

Use distributive property: a(b - c) = ab - ac

$(6)(2)-(6)(7x)+(x)(7x)-(x)(2)=0\\\\12-42x+7x^2-2x=0\\\\7x^2-44x+12=0\\\\7x^2-42x-2x+12=0\\\\7x(x-6)-2(x-6)=0\\\\(x-6)(7x-2)=0\iff x-6=0\ \vee\ 7x-2=0\\\\x-6=0\ \ \ |+6\\\\x=6\\\\7x-2=0\ \ \ |+2\\\\7x=2\ \ \ |:7\\\\x=\dfrac{2}{7}$

Answer:\ $x=6\ \vee\ x=\dfrac{2}{7}$

8 0

3 years ago

What is the answer for x+4=4x-17

sveta [45]

Answer: x=7

Step-by-step explanation:

×+4=4×-17

×-4×=-17-4

-3×=-21

×=-21/-3

×=7

6 0

4 years ago

If Paul is 5 years old and Mei is 2 years old, how old will Mei be when Paul is 15?

marusya05 [52]

Answer:

mei will be 12 years old

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

The general term of a sequence is given by Tn=-5n+6... which term in the sequence will be -269?

Lisa [10]

Answer:

55th term

Step-by-step explanation:

Let Tn = -269

Then -269 = -5n + 6

-275 = - 5n

n = 55

6 0

3 years ago