Ask question

Ask question

All categories

ivanzaharov [21]

3 years ago

5

How do you translate three times a number t minus twelve equals forty

2 answers:

nikitadnepr [17]3 years ago

5 0

3t - 12 = 40
I'm pretty sure this is right

scoundrel [369]3 years ago

5 0

Number=n
3n+t-12=40 I guess

You might be interested in

Help me asap! I will give you marks

Law Incorporation [45]

Recall the binomial theorem.

$(a+b)^n = \displaystyle \sum_{k=0}^n \binom nk a^{n-k} b^k$

1. The binomial expansion of $\left(1+\frac x3\right)^7$ is

$\left(1 + \dfrac x3\right)^7 = \displaystyle\sum_{k=0}^7 \binom 7k 1^{7-k} \left(\frac x3\right)^k = \sum_{k=0}^7 \binom 7k \frac{x^k}{3^k}$

Observe that

$k = 1 \implies \dbinom 71 \left(\dfrac x3\right)^1 = \dfrac73 x$

$k = 2 \implies \dbinom 72 \left(\dfrac x3\right)^2 = \dfrac73 x^2$

When we multiply these by $8-9x$ ,

• $8$ and $\frac73 x^2$ combine to make $\frac{56}3 x^2$

• $-9x$ and $\frac73 x$ combine to make $-\frac{63}3 x^2 = -21x^2$

and the sum of these terms is

$\dfrac{56}3 x^2 - 21x^2 = \boxed{-\dfrac73 x^2}$

2. The binomial expansion is

$\left(2a - \dfrac b2\right)^8 = \displaystyle \sum_{k=0}^8 \binom 8k (2a)^{8-k} \left(-\frac b2\right)^k = \sum_{k=0}^8 \binom 8k 2^{8-2k} a^{8-k} b^k$

We get the $a^6b^2$ term when $k=2$ :

$k=2 \implies \dbinom 82 2^{8-2\cdot2} a^{8-2} b^2 = 28 \cdot2^4 a^6 b^2 = \boxed{448} \, a^6b^2$

6 0

1 year ago

⭐️ Does anyone know this?!

ladessa [460]

Vertical stretch by 2 units.

B

6 0

4 years ago

A college student takes the same number of credits each semester. She had 9 credits when she started, and after 6 semesters, she

NeX [460]

Answer:

18 credits per semester

Step-by-step explanation:

7 0

3 years ago

PLS HELP! WILL GIVE BRAINLIST!

Vlad [161]

Answer:

y = 3x

Step-by-step explanation:

y = 13

x= 4

here

y∝x

that is

y= k x where k is constant

Since the equation is in the form $y=kx$ we know that

$13=K×4$

$k=13/4=3.25$

so we can write this

y = 3.23 x ≅ 3x

4 0

3 years ago

What is the actual length of the living space if the length of the scale drawing is 16.8 centimeters? Enter your answer in the b

algol13

<h2>Answer:</h2><h2></h2><h3>21m</h3><h2></h2><h2>Explanation:</h2><h2></h2>

The diagram and complete question is shown below. We know that the length (L) of the living scale in the drawing is:

$L=16.8cm$

We also know that the scale is:

$Scale:2cm=2.5m$

Then, by using proportion we have:

$\frac{2.5m}{2cm}=\frac{x}{16.8cm} \\ \\ \\ Isolating \ x: \\ \\ x=\frac{2.5m}{2cm}(16.8cm) \\ \\ \boxed{x=21m}$

7 0

4 years ago