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3 years ago

Math question (working too, if possible)

Mathematics

2 answers:

inessss [21]3 years ago

4 0

4/15 of the Primary School chose chicken nuggets.

TiliK225 [7]3 years ago

3 0

Add the fractions that chose fish fingers and burgers, then subtract that sum from 1.

Fish fingers: 2/5

Burgers: 1/3

Sum of fish fingers and burgers fractions:

2/5 + 1/3

Common denominator = 15

2/5 * 3/3 + 1/3 * 5/5 = 6/15 + 5/15 = 11/15

Now we subtract 11/15 from 1.

1 - 11/15 = 1/1 * 15/15 - 11/15 = 4/15

The fraction that chose chicken nuggets is 4/15.

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After exercising, Malik checked his heart rate it was beating at 90 beats per minute. After 20 minutes he rechecked his heart ra

miskamm [114]

Answer:

39%

Step-by-step explanation:

Hope this helped!

7 0

3 years ago

Solve.<br> x² + 5x – 2=0

ExtremeBDS [4]

Answer:

Use the quadratic formula

−

√

x=\frac{-{\color{#e8710a}{b}} \pm \sqrt{{\color{#e8710a}{b}}^{2}-4{\color{#c92786}{a}}{\color{#129eaf}{c}}}}{2{\color{#c92786}{a}}}

x=2a−b±b2−4ac

Once in standard form, identify a, b, and c from the original equation and plug them into the quadratic formula.

−

x^{2}+5x-2=0

x2+5x−2=0

a={\color{#c92786}{1}}

a=1

b={\color{#e8710a}{5}}

b=5

−

c={\color{#129eaf}{-2}}

c=−2

−

⋅

(

−

)

√

⋅

Step-by-step explanation:

this should help

8 0

3 years ago

Read 2 more answers

The diagram shows a 3 cm x 5 cm x 4 cm cuboid

Rainbow [258]

Answer:

a) The length of segment AC is approximately 5.83 centimeters.

b) The angle ACD is approximately 34.5º.

Step-by-step explanation:

a) Since $AB \perp BC$ , the length of segment $AC$ is determined by Pythagorean Theorem, that is:

$AC = \sqrt{(5\,cm)^{2}+(3\,cm)^{2}}$

$AC \approx 5.831\,cm$

The length of segment AC is approximately 5.831 centimeters.

b) Since $AB \perp BC \perp AD$ , the length of segment $AD$ is determined by this Pythagorean identity:

$AD = \sqrt{(3\,cm)^{2}+(5\,cm)^{2}+(4\,cm)^{2}}$

$AD \approx 7.071\,cm$

The angle ACD is determined by the following trigonometric expression:

$\cos C = \frac{AC}{CD}$

$\cos C = \frac{5.831\,cm}{7.071\,cm}$

$\cos C = 0.825$

$C = \cos^{-1} 0.825$

$C \approx 34.448^{\circ}$

The angle ACD is approximately 34.448º.

4 0

3 years ago

Ezra made cookies for a bake sale. He made 13 cookies in the shape of a dog and 54 cookies in other shapes. What is the probabil

Radda [10]

Answer:

Approximately 19.4%

Step-by-step explanation:

Co. Dogs: 13

Co. Others: 54

13+54=Total Co.

=67.

Co. Dogs: 13/67.

App. 19.4% (For 13 Co.)

App. 1.49% (For 1 Co.)

4 0

3 years ago

Given the following polynomial find the maximum possible number of turning points. f(x)=x^11+x^10+x^12+x^9

11111nata11111 [884]

Turning points are inflection points

think
1st degree (linear) has no turning/inflecion points
2nd degree (quadratic, parabola) has 1 turning/inflection point
so
nth degree has n-1 turning/inflection point

this is 11th degree since highest power is 12
12-1=11
11 turning oints

5 0

3 years ago