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timurjin [86]
2 years ago
8

Find the simultaneous equation 2x+5+-4+4 ​

Mathematics
1 answer:
Evgesh-ka [11]2 years ago
7 0
The answer is 2
-2x + 5
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Skills Practice: convert the following fractions into decimals. You must show your
Lina20 [59]
ANSWER:
0.25

i attached my work, hope this helps

8 0
2 years ago
Please help me with this! if you do you will get brainliest
VLD [36.1K]

Answer:

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Step-by-step explanation:

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3 years ago
Plz help!
Thepotemich [5.8K]

Answer:

20

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4 0
3 years ago
X, Y and Z form the vertices of a triangle. XY = 12.4m, XZ = 10.4m and YZ = 8.7m. Find the angle ∠ YXZ rounded to 1 DP.
sweet-ann [11.9K]

Answer:

43.8°

Step-by-step explanation:

Applying,

Cosine rule,

From the diagram attached,

x² = y²+z²-2yxcos∅.................... Equation 1

where ∅ = ∠YXZ

Given: x = 8.7 m, y = 10.4 m, z = 12.4 m

Substitute these values  into equation 1

8.7² = 10.4²+12.4²-[2×10.4×12.4cos∅]

75.69 = (108.16+153.76)-(257.92cos∅)

75.69 = 261.92-257.92cos∅

collect like terms

257.92cos∅ = 261.92-75.69

257.92cos∅ = 186.23

Divide both sides by the coefficient of cos∅

cos∅ = 186.23/257.92

cos∅ = 0.722

Find the cos⁻¹ of both side.

∅ = cos⁻¹(0.7220)

∅ = 43.78°

∅ = 43.8°

6 0
3 years ago
Can you help me with this
adell [148]
(5^-2 ● 4^-4)^-2

you need to multiply tge power of tge outside the bracket with tge power inside the bracket to eliminate the power

= 5^4 ● 4^8

the answer is A
5 0
3 years ago
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