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Andrews [41]
3 years ago
6

Solve the system of equations using substitution.

Mathematics
1 answer:
Dafna11 [192]3 years ago
8 0
It’s B
2(-4)+8(4)=24
-8+32=24

-2(-4)+4=12
8+4=12
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Express the following in standard form.​
salantis [7]

<em>To write in standard form, we have to move the decimal point in  </em>

<em>3.42</em>

<em> over 3 places to the left since our exponent is  10 3 </em>

<em>This gives us our answer of  </em>

<em>0.00342</em>

<em>Hope this helps.</em>

6 0
3 years ago
Please help! I will give Brainliest!<br> Who is correct?
DerKrebs [107]
Annie is correct, and I’ll tel u why you can make the same triangle but just flip it so it not going the same way see tell me if u got it correct.
8 0
3 years ago
Read 2 more answers
PLEASE HELP ME IM STRUGGLING!!!
Kitty [74]

Answer:

The required answer is c=7\sqrt{3}

Therefore the number in green box should be 7.

Step-by-step explanation:

Given:

AB = 7√2

AD = a , BD = b , DC = c , AC = d

∠B = 45°, ∠C = 30°

To Find:

c = ?

Solution:

In Right Angle Triangle ABD Sine identity we have

\sin B = \dfrac{\textrm{side opposite to angle B}}{Hypotenuse}\\

Substituting the values we get

\sin 45 = \dfrac{AD}{AB}= \dfrac{a}{7\sqrt{2}}

\dfrac{1}{\sqrt{2}}= \dfrac{a}{7\sqrt{2}}\\\\\therefore a=7

Now in Triangle ADC Tangent identity we have

\tan C = \dfrac{\textrm{side opposite to angle C}}{\textrm{side adjacent to angle C}}

Substituting the values we get

\tan 30 = \dfrac{AD}{DC}= \dfrac{a}{c}\\\\\dfrac{1}{\sqrt{3}}=\dfrac{7}{c}\\\\\therefore c=7\sqrt{3}

The required answer is c=7\sqrt{3}

8 0
3 years ago
I need help pls help
Andreyy89

Answer:

[?] = 4

(the complete term is 4\frac{1}{2}\ \text{cups})

Step-by-step explanation:

8\ \text{cups} - 1\frac{1}{3}\ \text{cups} - 2\frac{1}{6}\ \text{cups} = (8-1-2)\ \text{cups} +  \frac{-\frac{6}{3} - 1}{6}\ \text{cups} = 5\ \text{cups} + \frac{-3}{6}\ \text{cups} = 5\ \text{cups} + \frac{-1}{2}\ \text{cups} = 4\ \text{cups} + \frac{2 - 1}{2}\ \text{cups}

7 0
2 years ago
ANSWER QUICK PLSS!!!
meriva
The correct answer is letter C
4 0
3 years ago
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