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spayn [35]
3 years ago
9

Find the answers to these 2 questions please...

Mathematics
2 answers:
aleksley [76]3 years ago
8 0
I think x =-19 hope this helps 
zubka84 [21]3 years ago
6 0
First one
remember that all triangles internal angles (the 3 at the vertices) add to 180
we want BCD
we know BAD already
and ABC is a right angle
the measure of BDA is just there to throw us off

so

all adds to 180
BAD+ABC+BCD=180
59+90+BCD=180
149+BCD=180
minus 149 both sides
BCD=31
BCD=31 degrees




2nd problem
all angles add to 180 degrees
so
CAB+ABC+BCA=180
6x+147+2x+78+126+x=180
6x+2x+x+147+78+126=180
9x+351=180
minus 251 both sides
9x=-171
divide both sides by 9
x=-19
x=-19 degrees
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Use the log table to estimate the value of log10 8.65. A. .9703 B. .9037 C. .9730 D. .9370
Alex_Xolod [135]
A common logarithmic provides the following value for the log10 of 8.65:
<span><span>0.9370161
Which number is closest to this one? 
The answer is D) 0.9370. 
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4 0
3 years ago
Read 2 more answers
Which interpretation for the given expression is correct?<br><img src="https://tex.z-dn.net/?f=5%283x-4%29x%5E%7B2%7D" id="TexFo
Georgia [21]

Answer:

(15x- 20) x squared

Step-by-step explanation:

4 0
3 years ago
Please help me and show your work
morpeh [17]

Answer:

Step-by-step explanation:

y = 3x + 4

Plugin x = 3 in the equation,

y = 3*3 + 4

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y = 13

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y = 16

Plugin x = 5 in the equation,

y = 3*5 + 4

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y = 19

2) y =x - 7

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y = 10 - 7

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y = 13

6 0
2 years ago
Please help me with this one. I need help right away.
lana66690 [7]

b(1 -2) i just too the test

6 0
3 years ago
9. The endpoints of a diameter of a circle are A (2,1) and B(5,5). Find the area of the circle in terms of . (1 point)
Georgia [21]

Answer:

Area of the circle is 6.25π sq.unit

Step-by-step explanation:

The centre of the circle is at the mid point of a diameter. Th mid point of the diameter is at (5+22,5+12)or(72,3),which is centre. Radius is the distance from end point (5,5)to centre (72,3)∴r=√(5−72)2+(5−3)2=√1.52+4=√6.25=2.5∴

Area of the circle is Ac=π⋅r2=π⋅2.52=6.25π sq.unit[Ans]

5 0
3 years ago
Read 2 more answers
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