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4 years ago

What is the x-value of the solution to the system of equations? 5x + 4y = 8 2x − 3y = 17 −3 −2 4 5

Mathematics

2 answers:

labwork [276]4 years ago

8 0

Answer:

Step-by-step explanation:

5x + 4y = 8 ⇒ 4y = 8 - 5x ⇒ y = (8 - 5x)÷4

2x − 3y = 17

2x - 3(8 - 5x)÷4 = 17

×4 ×4

8x - 3(8 - 5x) = 68

8x - 24 + 15x = 68

+24 +24

23x = 92

÷23 ÷23

x = 4

Brut [27]4 years ago

7 0

Answer:

it is 4

Step-by-step explanation:

i did it on edge hope it helps.:)

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LiRa [457]

Answer:

Step-by-step explanation:

that's because there are two sandwiches and two drinks so one sandwich and drink is one lunch special

4 0

3 years ago

Need Help !!

Over [174]

$\huge \mathbb{\green{\fbox{\pink{ANSWER}}}}$

$\\ \: \: \implies \: sin^{4} \: \theta + cos^{4} \: \theta \rightarrow \blue{ \frac{1}{2} }$

$\\ \\ \: \large \mathfrak \green{Solution} :$

$\\ \bf \: Given :$

$\\ \sf \: \: \bf sin \: \theta - cos \: \theta = 0$

$\\ \sf \rightarrow \: sin \: \theta = cos \: \theta$

$\\ \sf \rightarrow \: \frac{sin \: \theta} {cos \: \theta} = 1$

$\\ \sf \rightarrow \: tan \: \theta = 1$

$\\ \sf \rightarrow \: tan \: \theta = tan \: 45 \degree$

$\\ \sf \rightarrow \: \theta = 45 \degree$

$\\ \\ \therefore \: sin^{4} \: \theta + cos^{4} \: \theta$

$\\ \sf \rightarrow \: sin^{4} \: 45 \degree + cos^{4} \: 45 \degree$

$\\ \\\sf \rightarrow \: (\frac{1}{ \sqrt{2} } ) ^{4} +(\frac{1}{ \sqrt{2} } ) ^{4}$

$\\ \sf \rightarrow \: ( \frac{1}{ \cancel {\sqrt{2} }} )^{ \cancel{2}} ( \frac{1}{ \cancel{ \sqrt{2} }} )^{\cancel{2}} + ( \frac{1}{ \cancel {\sqrt{2} }} )^{ \cancel{2}} ( \frac{1}{ \cancel{ \sqrt{2} }} )^{\cancel{2}}$

$\\ \\\sf \rightarrow \: \frac{1}{2} × \frac{1}{2} + \frac{1}{2}× \frac{1}{2}$

$\\ \\ \sf \rightarrow \: \frac{1}{4} + \frac{1}{4}$

$\\ \\ \sf \rightarrow \: {\cancel \frac{2} {4}}$

$\\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \sf \implies \fbox{\pink {\frac{1}{2}}}$

3 0

3 years ago

Read 2 more answers

PLEASE HELP!!!

pav-90 [236]

Answer:

Step-by-step explanation:

Have a nice day :)

3 0

3 years ago

Module 5 section 5.2

Luba_88 [7]

Grade 3.141592653589793238462643383279502884197? Or what?

4 0

3 years ago

you buy a box of chocolates containing 2772 pieces if you give 900 of the chocolate to your parents and share the rest equally w

neonofarm [45]

Answer:

You will have 624 chocolates for yourself.

Step-by-step explanation:

2772 - 900 = 1,872

1,872 / 3 = 624

You and your siblings will have 624 pieces each after all is said and done.

7 0

3 years ago